In a Survo puzzle the task is to fill an
For example, in the Survo puzzle on the right the integers 3, 6, and 8 are readily given. Thus the task is to find the correct places for the rest of the integers 112 so that the sums will match. Give it a try! 

Survo puzzles have been eagerly studied and solved among the active Survo users and their friends beginning from the spring of 2006. In harder cases various computational features of the Survo system have been helpful.
Many people have found Survo puzzles more interesting and more challenging than popular Sudoku and Kakuro puzzles.
Basic information and guided solutions are given in the paper www.survo.fi/papers/puzzles.pdf.
A new method for solving Survo puzzles is presented in
On the swapping method.
Some theoretical results are presented in
Enumeration of Survo puzzles (24 October 2007).
Plenty of Survo puzzles to be solved by the swapping method are available as a
Java applet.
You may send your solutions to me by email (seppo.mustonen'at'survo.fi) by the dates mentioned in the problems below. It is not necessary to solve all the problems. A solution will be more valuable, if
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  

1  8  
2  17  
3  20  
8  15  22 
A  B  C  D  

1  12  30  
2  10  16  
3  11  32  
22  20  14  22 
A  B  C  D  E  F  G  H  I  J  

1  64  
2  146  
10  11  14  17  20  22  23  27  31  35 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  

1  7  16  46  
2  6  5  21  
3  1  12  20  
4  11  15  49  
28  36  22  50 
A  B  C  D  E  

1  3  26  
2  15  39  
3  11  13  14  55  
25  28  31  13  23 
A  B  C  D  E  F  

1  11  18  17  72  
2  15  43  
3  2  16  14  56  
23  22  23  35  34  34 
A  B  C  D  

1  20  
2  11  19  50  
3  4  41  
4  15  50  
5  17  49  
42  54  58  56 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  E  

1  2  3  37  
2  11  5  43  
3  1  15  8  40  
24  28  26  27  15 
A  B  C  D  E  

1  1  2  21  
2  3  4  73  
3  13  85  
4  15  18  16  84  
5  10  8  62  
39  51  101  72  62 
A  B  C  D  

1  15  
2  26  
3  37  
12  13  23  30 
A  B  C  D  E  F  

1  52  
2  89  
3  30  
15  34  44  21  26  31 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  E  

1  15  
2  40  
13  15  11  7  9 
A  B  C  D  

1  32  
2  9  43  
3  8  23  
4  7  38  
14  42  23  57 
A  B  C  D  E  

1  25  
2  39  
3  56  
25  40  11  29  15 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  

1  7  
2  17  
3  21  
11  14  20 
A  B  C  D  E  F  G  H  

1  20  11  77  
2  17  16  9  85  
3  8  18  19  138  
34  47  17  63  26  44  33  36 
A  B  C  D  

1  51  
2  38  
3  29  
4  18  
55  35  27  19 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  E  F  

1  17  14  60  
2  6  2  15  47  
3  4  12  64  
32  27  26  31  29  26 
A  B  C  D  E  F  

1  1  36  
2  2  17  53  
3  18  82  
13  21  25  29  32  51 
A  B  C  D  E  F  

1  25  
2  61  
3  85  
13  22  27  32  37  40 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  E  F  

1  18  24  9  99  
2  15  16  14  85  
3  10  20  59  
4  2  3  11  12  57  
25  31  74  53  57  60 
A  B  C  D  

1  7  43  
2  29  
3  8  16  
4  48  
20  40  52  24 
A  B  C  D  E  

1  24  
2  40  
3  56  
7  21  25  30  37 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  

1  15  4  3  28  
2  2  10  24  
3  11  44  
4  13  14  1  40  
43  32  38  23 
A  B  C  D  E  F  

1  4  33  8  109  
2  10  35  2  93  
3  29  28  5  7  114  
4  14  26  18  20  114  
5  30  22  16  11  127  
6  6  17  31  19  109  
84  103  127  115  101  136 
A  B  C  D  

1  8  26  
2  13  32  
3  1  34  
4  14  44  
50  40  14  32 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  

1  11  
2  15  
3  19  
7  14  24 
A  B  C  D  E  F  G  

1  22  23  5  10  19  111  
2  13  26  25  24  117  
3  8  27  21  15  99  
4  18  7  1  79  
69  55  93  31  66  63  29 
A  B  C  D  

1  18  
2  27  
3  40  
4  51  
22  24  36  54 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  E  F  G  

1  77  
2  28  
3  126  
36  39  30  33  42  27  24 
A  B  C  D  E  F  G  

1  11  8  75  
2  13  12  6  10  65  
3  14  7  9  91  
36  37  32  38  17  41  30 
A  B  C  D  E  

1  32  
2  8  38  
3  50  
6  16  25  34  39 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  

1  15  4  3  28  
2  2  10  24  
3  11  44  
4  13  14  1  40  
43  32  38  23 
A  B  C  D  

1  1  8  16  
2  29  
3  41  
4  7  16  50  
15  32  38  51 
A  B  C  D  

1  8  42  
2  22  
3  46  
4  6  9  26  
43  32  28  33 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  E  

1  10  17  20  57  
2  19  14  46  
3  11  12  15  50  
4  16  18  13  57  
48  39  51  31  41 
A  B  C  D  E  F  

1  11  10  6  20  111  
2  7  8  15  26  89  
3  16  25  27  19  12  127  
4  13  22  115  
5  23  24  21  134  
6  18  17  14  90  
111  102  103  121  149  80 
A  B  C  D  E  

1  38  
2  27  
3  57  
4  88  
42  21  37  50  60 
Hint: The four first numbers in the first row form a fourdigit
prime number p with the property p mod 101 = 88. The number 5
is not located in that row.
The digits can be revealed easily by using Survo.
Even without this hint there is a unique solution but then
the degree of difficulty would be about 12000.
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  

1  14  
2  7  16  
3  4  15  
13  15  17 
A  B  C  

1  2  12  
2  17  
3  16  
14  15  16 
A  B  C  

1  12  
2  17  
3  16  
14  15  16 
This is a generalization of the previous problem.
It has not a unique solution. List all solutions.
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  

1  8  9  39  
2  7  4  25  
3  13  3  45  
4  11  27  
28  40  44  24 
A  B  C  D  E  

1  31  
2  40  
3  49  
7  15  24  34  40 
A  B  C  D  E  

1  43  
2  6  9  37  
3  1  56  
4  74  
17  53  45  57  38 
Extra requirement:
The sum of reciprocal values of numbers in the first row is
equal to 1, i.e.
1/A1+1/B1+1/C1+1/D1+1/E1=1
and the numbers in that row are in increasing order.
The row can be revealed in Survo, for example, by a short command of 11 characters.
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  

1  13  11  46  
2  3  2  28  
3  4  8  28  
4  16  7  34  
58  24  20  34 
A  B  C  D  

1  7  16  34  
2  15  37  
3  11  29  
4  10  36  
32  33  29  42 
A  B  C  D  E  

1  19  3  14  66  
2  24  57  
3  17  41  
4  23  25  12  91  
5  13  5  70  
88  86  54  51  46 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  E  

1  1  25  13  57  
2  2  8  21  63  
3  16  23  6  67  
4  10  19  9  56  
5  5  22  17  82  
15  79  71  75  85 
A  B  C  D  E  F  

1  30  
2  48  
3  10  11  16  18  20 
A  B  C  D  E  F  G  

1  35  
2  70  
7  11  12  13  16  20  26 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
A  B  C  D  E  

1  5  2  8  35  
2  11  40  
3  10  45  
28  23  24  21  24 
A  B  C  D  E  

1  17  3  49  
2  11  60  
3  5  18  46  
4  7  12  55  
42  41  41  42  44 
A  B  C  D  

1  27  
2  13  
3  53  
4  43  
47  39  29  21 
Hint: Let X be the positive root of the quadratic equation 456*X^2+1416*X131=0. Then X can be represented as a continued fraction 1 X =  1 A1 +  1 B1 +  1 C1 +  D1 + X and this gives the the first row of the table. In Survo these numbers can be evaluated, for example, by the following recursive formulas of editorial computing: Y(N,X):=if(N=0)then(X)else(1/(Y(N1,X)A(N1,X))) A(N,X):=if(N=0)then(int(X))else(int(Y(N,X)))
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The time given for the solutions is two weeks. The correct solutions will be published on May 7, 2007.
A  B  C  D  

1  1  8  41  
2  2  13  9  43  
3  7  3  37  
4  6  4  37  
5  10  20  52  
48  55  45  62 
A  B  C  D  

1  11  49  
2  7  30  
3  13  12  32  
4  14  9  10  52  
5  8  47  
73  43  56  38 
A  B  C  D  

1  48  
2  22  
3  56  
4  40  
5  44  
57  26  90  37 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The time given for the solutions is two weeks. The correct solutions will be published on May 28, 2007.
A  B  C  D  E  F  G  

1  2  3  11  40  
2  10  65  
8  9  11  14  17  20  26 
A  B  C  D  E  

1  9  20  68  
2  7  14  21  62  
3  10  11  13  47  
4  25  15  71  
5  5  24  8  77  
69  63  63  62  68 
A  B  C  D  E  F  G  H  

1  45  
2  91  
9  10  11  14  18  22  24  28 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The time given for the solutions is two weeks. The correct solutions will be published on June 11, 2007.
A  B  C  

1  15  
2  2  16  
3  1  14  
14  18  13 
A  B  C  D  

1  20  
2  13  47  
3  14  12  33  
4  7  36  
42  30  29  35 
A  B  C  D  E  

1  37  
2  4  53  
3  55  
4  10  3  65  
31  42  38  31  68 
This Survo puzzle has 240 different solutions, but the following hint makes the solution unique. Let n(k) be the number of partitions of k into prime parts. For example n(13)=9 since 13 can be represented as a sum of prime numbers in following ways: 1: 2+2+2+2+2+3 2: 2+2+3+3+3 3: 2+2+2+2+5 4: 2+3+3+5 5: 3+5+5 6: 2+2+2+7 7: 3+3+7 8: 2+11 9: 13 Hint: The thirteenth root of n(83) has the continued fraction expansion [A1,B1,C1,D1,E1,...].
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The time given for the solutions is two weeks. The correct solutions will be published on 9 July, 2007.
A  B  C  D  

1  9  34  
2  6  3  36  
3  10  7  35  
4  11  4  31  
40  31  37  28 
A  B  C  D  

1  32  
2  11  
3  40  
4  53  
22  30  35  49 
A  B  C  D  

1  51  
2  36  
3  32  
4  17  
51  42  26  17 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The time given for the solutions is two weeks. The correct solutions will be published on July 23, 2007.
A  B  C  D  E  F  

1  11  8  56  
2  6  48  
3  9  13  7  67  
20  30  23  33  26  39 
A  B  C  D  E  F  

1  16  11  63  
2  8  14  43  
3  17  65  
25  39  25  22  33  27 
A  B  C  D  E  F  

1  90  
2  48  
3  33  
43  35  31  27  22  13 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on August 20, 2007.
A  B  C  D  E  

1  2  29  
2  11  12  9  48  
3  8  5  43  
21  31  19  22  27 
A  B  C  D  

1  13  10  34  
2  11  32  
3  6  3  25  
4  45  
32  39  24  41 
A  B  C  D  E  

1  24  
2  41  
3  58  
4  87  
21  37  42  50  60 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on September 17, 2007.
A  B  C  D  

1  8  21  
2  10  1  23  
3  9  11  34  
25  15  16  22 
A  B  C  D  E  

1  35  
2  27  
3  58  
36  7  27  30  20 
A  B  C  D  

1  14  
2  24  
3  45  
4  53  
20  31  40  45 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on October 15, 2007.
A  B  C  D  E  F  

1  16  17  54  
2  15  70  
3  8  7  12  14  78  
4  11  9  13  98  
22  24  39  61  73  81 
A  B  C  D  E  F  

1  11  54  
2  8  21  70  
3  9  24  78  
4  16  23  22  98  
22  24  39  61  73  81 
A  B  C  D  E  F  

1  54  
2  70  
3  78  
4  98  
22  24  39  61  73  81 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on October 29, 2007.
A  B  C  D  

1  53  
2  1  2  22  
3  3  4  30  
4  31  
40  17  35  44 
A  B  C  D  

1  25  
2  1  35  
3  15  2  33  
4  43  
38  24  44  30 
A  B  C  D  E  

1  20  
2  44  
3  65  
4  81  
24  33  38  57  58 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on November 12, 2007.
A  B  C  D  E  F  G  

1  3  19  74  
2  14  13  20  16  76  
3  2  21  18  81  
27  34  26  33  39  30  42 
A  B  C  D  E  F  G  

1  9  11  78  
2  13  81  
3  17  4  10  12  72  
35  39  43  25  37  19  33 
A  B  C  D  E  F  G  

1  50  
2  67  
3  114  
12  17  28  37  40  45  52 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on November 26, 2007.
A  B  C  D  

1  3  26  
2  5  1  23  
3  2  29  
28  14  21  15 
A  B  C  D  E  

1  7  8  34  
2  12  39  
3  10  6  47  
24  22  17  27  30 
A  B  C  D  E  

1  23  
2  4  8  11  38  
3  59  
11  16  28  29  36 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on December 10, 2007.
A  B  C  D  

1  6  23  
2  7  33  
3  9  41  
4  4  8  39  
35  36  40  25 
A  B  C  D  

1  2  45  
2  5  4  33  
3  6  1  26  
4  32  
37  33  35  31 
A  B  C  D  

1  13  
2  37  
3  41  
4  45  
17  28  39  52 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on December 24, 2007.
A  B  C  D  E  

1  11  15  53  
2  12  9  47  
3  7  14  59  
4  13  8  10  51  
43  51  39  46  31 
A  B  C  D  E  

1  7  51  
2  54  
3  62  
4  43  
42  59  11  25  73 
A  B  C  D  E  

1  1  38  
2  45  
3  56  
4  20  71  
11  26  49  58  66 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on December 24, 2007.
A  B  C  D  E  

1  26  
2  35  
3  59  
12  15  24  31  38 
A  B  C  D  

1  14  
2  27  
3  37  
10  16  22  30 
A  B  C  D  

1  22  
2  27  
3  32  
4  55  
16  30  38  52 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on January 28, 2008.
A  B  C  D  E  

1  19  15  88  
2  3  7  17  
3  12  67  
4  38  
46  42  36  54  32 
A  B  C  D  E  

1  11  60  
2  20  
3  10  40  
20  35  11  25  29 
A  B  C  D  E  

1  53  
2  14  38  
3  17  47  
4  72  
29  11  69  43  58 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on February 11, 2008.
A  B  C  D  

1  17  
2  37  
3  24  
24  17  8  29 
A  B  C  D  E  

1  58  
2  36  
3  26  
25  7  32  21  35 
A  B  C  D  E  F  

1  88  
2  47  
3  36  
25  12  21  39  31  43 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on February 25, 2008.
A  B  C  D  

1  25  
2  33  
3  20  
14  8  33  23 
A  B  C  D  

1  14  
2  9  41  
3  4  27  
4  54  
23  51  33  29 
A  B  C  D  

1  4  49  
2  36  
3  24  
4  18  44  
5  57  
17  45  64  84 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on March 10, 2008.
A  B  C  D  

1  6  36  
2  7  46  
3  2  24  
4  30  
55  19  45  17 
A  B  C  D  

1  3  20  
2  37  
3  56  
4  2  23  
50  20  28  38 
A  B  C  D  

1  13  
2  13  55  
3  43  
4  25  
39  21  44  32 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on March 24, 2008.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  F  

1  50  
2  4  28  
21  4  10  10  18  15 
A  B  C  D  E  F  G  

1  46  
2  59  
4  15  20  22  7  10  27 
A  B  C  D  E  F  G  H  

1  43  
2  93  
10  7  20  16  12  19  25  27 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on April 7, 2008.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  5  17  
2  34  
3  27  
30  25  7  16 
A  B  C  D  E  

1  8  40  
2  2  17  
3  63  
23  33  21  15  28 
A  B  C  D  E  F  

1  10  49  
2  31  
3  91  
26  34  16  43  31  21 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on May 5, 2008.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  12  33  
2  15  5  10  46  
3  4  9  40  
4  6  17  
50  45  13  28 
A  B  C  D  

1  36  
2  17  
3  29  
4  54  
17  29  50  40 
A  B  C  D  

1  39  
2  46  
3  18  
4  33  
55  39  28  14 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on June 2, 2008.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  34  
2  18  
3  26  
22  32  17  _7 
A  B  C  D  E  

1  40  
2  50  
3  30  
42  _7  31  18  22 
A  B  C  D  E  F  

1  8  30  
2  14  60  
3  81  
40  30  _9  19  39  34 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on June 30, 2008.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  4  37  
2  11  31  
3  9  47  
4  10  21  
52  16  47  21 
A  B  C  D  

1  21  
2  45  
3  54  
4  6  3  16  
39  45  31  21 
A  B  C  D  

1  14  53  
2  24  
3  16  
4  43  
20  49  38  29 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on July 28, 2008.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  

1  4  6  29  
2  1  26  
19  4  6  15  11 
A  B  C  D  E  F  

1  9  35  
2  12  43  
23  14  11  3  8  19 
A  B  C  D  E  F  G  

1  6  34  
2  71  
20  18  25  9  14  8  11 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on August 25, 2008.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  F  

1  4  32  
2  12  16  17  79  
3  15  2  60  
24  22  43  35  39  8 
A  B  C  D  E  F  

1  6  7  33  
2  3  49  
3  13  89  
31  15  45  34  19  27 
A  B  C  D  E  F  

1  30  
2  18  86  
3  55  
22  11  42  32  27  37 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on September 22, 2008.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  21  
2  3  12  30  
3  27  
25  6  32  15 
A  B  C  D  E  

1  33  
2  38  
3  49  
42  31  6  24  17 
A  B  C  D  E  F  

1  3  28  
2  53  
3  90  
26  42  22  16  29  36 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on October 20, 2008.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  F  

1  50  
2  28  
11  17  14  10  22  4 
A  B  C  D  E  F  G  

1  69  
2  36  
9  15  5  18  21  12  25 
A  B  C  D  E  F  G  H  

1  47  
2  89  
20  25  27  4  9  21  17  13 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on November 17, 2008.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  F  

1  88  
2  26  
3  57  
12  24  39  35  29  32 
A  B  C  D  E  F  

1  43  
2  71  
3  57  
36  12  49  26  9  39 
A  B  C  D  E  F  

1  89  
2  50  
3  32  
36  27  13  31  43  21 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on December 15, 2008.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  2  17  
2  15  12  42  
3  3  25  
4  14  52  
52  20  35  29 
A  B  C  D  

1  38  
2  29  
3  46  
4  23  
55  42  12  27 
A  B  C  D  E  

1  68  
2  16  
3  86  
4  40  
43  37  29  54  47 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on January 12, 2009.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  F  

1  67  
2  13  8  55  
3  10  49  
50  35  14  41  7  24 
A  B  C  D  E  F  

1  75  
2  2  42  
3  54  
15  21  49  12  43  31 
A  B  C  D  E  

1  6  24  
2  46  
3  81  
4  59  
53  19  46  62  30 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on February 9, 2009.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  

1  17  
2  20  
3  2  8  
16  8  21 
A  B  C  D  

1  15  
2  22  
3  41  
23  11  17  27 
A  B  C  D  E  

1  23  
2  13  60  
3  37  
25  31  9  34  21 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on March 9, 2009.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  

1  44  
2  15  12  55  
3  1  2  5  21  
11  16  28  38  27 
A  B  C  D  E  

1  9  58  
2  10  27  
3  11  35  
24  34  10  36  16 
A  B  C  D  E  

1  15  
2  61  
3  44  
24  21  32  15  28 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on April 6, 2009.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  9  44  
2  3  4  10  
3  6  5  26  
4  56  
36  30  28  42 
A  B  C  D  

1  15  9  42  
2  45  
3  22  
4  27  
14  55  26  41 
A  B  C  D  

1  26  
2  15  55  
3  44  
4  11  
38  23  42  33 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on May 3, 2009.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  F  

1  12  8  57  
2  4  6  69  
3  15  45  
34  7  26  14  41  49 
A  B  C  D  E  F  

1  6  34  
2  73  
3  64  
34  16  45  29  39  8 
A  B  C  D  E  F  

1  93  
2  56  
3  22  
27  33  24  37  30  20 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on June 1, 2009.
The easiest way to solve these three problems may be
using the
Java Applet
based on the swapping method.
A  B  C  D  

1  7  5  25  
2  3  38  
3  13  30  
4  10  43  
56  41  10  29 
A  B  C  D  

1  23  
2  11  33  
3  10  43  
4  37  
54  44  28  10 
A  B  C  D  

1  30  
2  44  
3  24  
4  38  
11  29  57  39 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on June 29, 2009.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  F  

1  14  45  
2  16  74  
3  8  52  
39  7  47  36  14  28 
A  B  C  D  E  F  

1  12  66  
2  7  49  
3  56  
42  31  26  51  14  7 
A  B  C  D  E  F  

1  29  
2  55  
3  17  87  
41  11  23  32  28  36 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on July 27, 2009.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  

1  56  
2  5  28  
3  36  
21  16  40  11  32 
A  B  C  D  E  

1  17  66  
2  58  
3  50  
4  36  
58  69  26  11  46 
A  B  C  D  E  

1  19  
2  20  81  
3  12  65  
4  45  
56  19  37  52  46 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on August 24, 2009.
The easiest way to solve two last problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  49  
2  23  
3  34  
4  30  
40  52  10  34 
A  B  C  D  

1  5  14  
2  45  
3  55  
4  22  
43  29  24  40 
A  B  C  D  

1  9  27  
2  54  
3  44  
4  11  
40  43  30  23 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on September 21, 2009.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  24  
2  17  
3  37  
20  16  32  10 
A  B  C  D  

1  14  45  
2  33  
3  20  
4  38  
28  54  42  12 
A  B  C  D  

1  33  
2  48  
3  42  
4  13  
28  49  42  17 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on October 19, 2009.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  

1  8  43  
2  3  4  16  
3  7  61  
32  14  21  25  28 
A  B  C  D  E  

1  62  
2  6  19  
3  39  
14  18  33  31  24 
A  B  C  D  E  

1  37  
2  21  
3  62  
26  13  17  30  34 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on November 16, 2009.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  28  
2  32  
3  16  37  
4  39  
42  58  10  26 
A  B  C  D  

1  32  
2  44  
3  50  
4  10  
29  37  48  22 
A  B  C  D  

1  40  
2  10  47  
3  17  
4  32  
42  52  28  14 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on December 14, 2009.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  3  16  
2  22  
3  40  
16  22  11  29 
A  B  C  D  

1  24  
2  17  
3  37  
20  16  32  10 
A  B  C  D  

1  32  
2  21  
3  25  
24  33  8  13 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on January 11, 2010.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  

1  39  
2  51  
3  30  
28  13  8  31  40 
A  B  C  D  E  

1  3  57  
2  30  
3  71  
4  52  
46  16  23  59  66 
A  B  C  D  E  

1  72  
2  63  
3  19  
4  56  
41  19  51  33  66 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on February 8, 2010.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  F  

1  47  
2  31  
19  15  22  11  7  4 
A  B  C  D  E  F  G  

1  70  
2  35  
22  9  17  24  16  11  6 
A  B  C  D  E  F  

1  86  
2  53  
3  32  
30  41  10  37  20  33 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on March 8, 2010.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  10  31  
2  14  
3  33  
16  29  9  24 
A  B  C  D  

1  42  
2  23  
3  13  
13  17  26  22 
A  B  C  D  

1  27  
2  12  
3  52  
4  45  
20  45  31  40 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on April 5, 2010.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  E  

1  38  
2  12  61  
3  21  
22  34  29  10  25 
A  B  C  D  E  

1  27  
2  38  
3  55  
30  7  39  25  19 
A  B  C  D  E  

1  62  
2  4  27  
3  80  
4  41  
48  30  69  40  23 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on May 3, 2010.
The easiest way to solve these three problems may be using the Java Applet based on the swapping method.
A  B  C  D  

1  10  6  46  
2  8  20  
3  40  
4  12  30  
23  46  15  52 
A  B  C  D  

1  43  
2  24  
3  30  
4  39  
46  54  12  24 
A  B  C  D  

1  8  38  
2  32  
3  24  
4  42  
57  11  27  41 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on June 1, 2010.
A  B  C  D  

1  13  
2  42  
3  23  
12  19  25  22 
A  B  C  D  

1  31  
2  55  
3  8  6  39  
4  11  
30  22  45  39 
A  B  C  D  

1  12  
2  6  44  
3  27  
4  53  
38  20  33  45 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on June 29, 2010.
A  B  C  D  

1  26  
2  36  
3  16  
21  18  31  8 
A  B  C  D  E  

1  39  
2  18  
3  63  
15  19  24  28  34 
A  B  C  D  E  F  

1  15  63  
2  23  
3  85  
41  31  26  21  36  16 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on July 27, 2010.
A  B  C  

1  8  21  
2  9  
3  15  
17  20  8 
A  B  C  

1  15  
2  7  
3  23  
10  19  16 
A  B  C  D  

1  39  
2  22  
3  17  
23  9  17  29 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on August 23, 2010.
A  B  C  D  E  

1  20  
2  35  
10  9  18  14  4 
A  B  C  D  E  F  

1  22  
2  56  
8  14  16  12  9  19 
A  B  C  D  E  F  G  

1  33  
2  72  
21  7  14  24  9  17  13 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on September 20, 2010.
A  B  C  D  

1  44  
2  30  
3  25  
4  37  
12  24  45  55 
A  B  C  D  

1  45  
2  24  
3  30  
4  37  
43  56  24  13 
A  B  C  D  

1  17  
2  3  5  26  
3  52  
4  41  
33  20  53  30 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on October 18, 2010.
A  B  C  D  

1  17  
2  22  
3  39  
23  9  17  29 
A  B  C  D  E  

1  19  
2  60  
3  41  
23  14  17  35  31 
A  B  C  D  E  F  

1  27  
2  9  58  
3  86  
26  35  10  28  32  40 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on November 15, 2010.
A  B  C  D  

1  43  
2  7  14  33  
3  24  
4  36  
30  39  57  10 
A  B  C  D  

1  44  
2  23  
3  38  
4  31  
25  55  12  44 
A  B  C  D  E  

1  17  
2  38  
3  85  
4  70  
48  54  30  35  43 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on December 13, 2010.
A  B  C  

1  22  
2  16  
3  7  
10  20  15 
A  B  C  D  

1  8  1  18  
2  39  
3  21  
23  17  29  9 
A  B  C  D  E  

1  36  
2  25  
3  59  
16  23  38  12  31 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on January 10, 2011.
A  B  C  D  

1  13  
2  47  
3  7  23  
4  53  
43  40  30  23 
A  B  C  D  

1  15  58  
2  42  
3  4  12  
4  24  
40  38  32  26 
A  B  C  D  

1  14  
2  39  
3  56  
4  27  
19  39  33  45 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on February 7, 2011.
A  B  C  D  E  

1  35  
2  20  
11  8  14  18  4 
A  B  C  D  E  F  

1  24  
2  54  
6  9  19  18  14  12 
A  B  C  D  E  F  G  

1  69  
2  36  
12  17  9  14  6  26  21 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on March 7, 2011.
A  B  C  D  

1  10  41  
2  56  
3  24  
4  15  
30  47  37  22 
A  B  C  D  

1  44  
2  14  
3  55  
4  23  
31  45  22  38 
A  B  C  D  

1  17  
2  54  
3  40  
4  25  
49  31  38  18 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on April 4, 2011.
A  B  C  D  

1  11  35  
2  18  
3  25  
23  31  7  17 
A  B  C  D  

1  27  
2  4  13  
3  11  38  
17  26  25  10 
A  B  C  D  

1  26  
2  16  
3  36  
23  31  14  10 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on May 2, 2011.
A  B  C  D  

1  10  28  
2  8  44  
3  40  
4  24  
53  47  14  22 
A  B  C  D  

1  14  
2  12  38  
3  26  
4  58  
22  39  32  43 
A  B  C  D  

1  3  21  
2  56  
3  15  
4  44  
24  30  38  44 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on May 30, 2011.
A  B  C  D  

1  10  11  41  
2  15  
3  22  
18  22  11  27 
A  B  C  D  

1  14  
2  28  
3  5  36  
10  30  16  22 
A  B  C  D  

1  38  
2  12  
3  28  
11  17  22  28 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on June 27, 2011.
A  B  C  D  

1  11  54  
2  11  
3  28  
4  43  
23  46  37  30 
A  B  C  D  

1  38  
2  13  28  
3  19  
4  51  
56  34  26  20 
A  B  C  D  E  

1  38  
2  63  
3  83  
4  26  
42  51  63  21  33 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on July 25, 2011.
A  B  C  D  E  

1  3  24  
2  56  
3  40  
9  17  37  26  31 
A  B  C  D  E  

1  50  
2  41  
3  29  
22  10  32  42  14 
A  B  C  D  E  

1  62  
2  34  
3  24  
24  19  12  28  37 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on August 22, 2011.
A  B  C  D  E  

1  32  
2  23  
6  12  19  4  14 
A  B  C  D  E  F  

1  33  
2  45  
15  10  20  7  22  4 
A  B  C  D  E  F  G  

1  62  
2  43  
21  9  5  27  19  17  7 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on September 19, 2011.
A  B  C  D  

1  14  54  
2  2  10  25  
3  3  4  15  
4  12  42  
33  18  39  46 
A  B  C  D  

1  52  
2  13  37  
3  28  
4  19  
51  24  43  18 
A  B  C  D  

1  19  
2  46  
3  39  
4  32  
14  53  25  44 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on October 17, 2011.
A  B  C  D  E  

1  14  15  59  
2  5  34  
3  4  27  
12  20  29  40  19 
A  B  C  D  E  

1  5  24  
2  40  
3  56  
26  31  9  17  37 
A  B  C  D  E  

1  37  
2  58  
3  25  
37  8  24  21  30 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on November 14, 2011.
A  B  C  D  

1  3  36  
2  43  
3  22  
4  14  35  
13  24  43  56 
A  B  C  D  

1  13  
2  56  
3  43  
4  24  
30  24  45  37 
A  B  C  D  

1  44  
2  32  
3  38  
4  22  
22  54  14  46 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on December 12, 2011.
A  B  C  D  E  

1  12  37  
2  8  61  
3  4  22  
13  30  36  17  24 
A  B  C  D  E  

1  59  
2  4  21  
3  40  
37  24  11  29  19 
A  B  C  D  E  

1  18  
2  57  
3  45  
37  27  20  24  12 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on January 9, 2012.
A  B  C  D  E  F  

1  7  26  
2  82  
3  63  
22  37  41  27  33  11 
A  B  C  D  E  F  

1  16  91  
2  49  
3  31  
15  25  34  21  40  36 
A  B  C  D  E  F  

1  27  
2  63  
3  81  
35  46  14  26  31  19 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on February 6, 2012.
A  B  C  D  

1  10  29  
2  9  14  42  
3  16  
4  11  49  
26  50  43  17 
A  B  C  D  

1  10  31  
2  11  
3  42  
4  12  52  
41  21  46  28 
A  B  C  D  

1  39  
2  31  
3  49  
4  17  
17  39  26  54 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on March 5, 2012.
A  B  C  D  

1  9  29  
2  7  33  
3  16  
8  23  31  16 
A  B  C  D  

1  39  
2  17  
3  22  
23  9  29  17 
A  B  C  D  

1  22  
2  17  
3  39  
10  17  21  30 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on April 2, 2012.
A  B  C  D  

1  7  2  26  
2  10  20  
3  54  
4  8  36  
37  27  53  19 
A  B  C  D  

1  43  
2  11  
3  57  
4  7  25  
37  32  41  26 
A  B  C  D  

1  16  
2  40  
3  53  
4  27  
16  32  40  48 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on April 30, 2012.
A  B  C  D  E  

1  29  
2  12  42  
3  49  
22  34  17  40  _7 
A  B  C  D  E  

1  42  
2  58  
3  20  
29  24  21  10  36 
A  B  C  D  E  F  

1  45  
2  56  
3  70  
_8  26  39  35  50  13 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on May 28, 2012.
A  B  C  D  

1  38  
2  11  
3  29  
4  58  
43  32  24  37 
A  B  C  D  

1  2  18  
2  47  
3  39  
4  32  
43  16  53  24 
A  B  C  D  

1  12  52  
2  42  
3  15  
4  27  
40  17  31  48 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on June 25, 2012.
A  B  C  D  E  

1  37  
2  18  
16  10  4  11  14 
A  B  C  D  E  F  

1  22  
2  56  
7  18  10  16  12  15 
A  B  C  D  E  F  G  

1  42  
2  63  
10  _7  17  22  20  _4  25 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on July 23, 2012.
A  B  C  D  E  

1  16  
2  41  
3  63  
33  24  16  27  20 
A  B  C  D  E  

1  47  
2  32  
3  41  
35  40  7  24  14 
A  B  C  D  E  

1  20  
2  37  
3  11  63  
25  34  15  29  17 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on August 20, 2012.
A  B  C  D  

1  13  
2  23  
3  42  
13  17  26  22 
A  B  C  D  

1  3  22  
2  48  
3  37  
4  29  
45  15  23  53 
A  B  C  D  

1  49  
2  41  
3  19  
4  27  
19  55  38  24 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on September 17, 2012.
A  B  C  D  

1  13  35  
2  14  57  
3  2  25  
4  4  19  
35  31  50  20 
A  B  C  D  

1  7  41  
2  3  11  
3  57  
4  8  27  
42  38  24  32 
A  B  C  D  

1  24  
2  47  
3  53  
4  12  
31  43  23  39 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on October 15, 2012.
A  B  C  D  E  

1  33  
2  39  
3  48  
32  13  42  25  8 
A  B  C  D  E  

1  23  
2  64  
3  33  
14  35  19  23  29 
A  B  C  D  E  F  

1  36  
2  76  
3  59  
44  39  31  35  13  9 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on November 12, 2012.
A  B  C  D  

1  15  45  
2  8  51  
3  2  12  
4  9  28  
46  32  39  19 
A  B  C  D  

1  3  23  
2  14  
3  54  
4  45  
22  37  46  31 
A  B  C  D  

1  41  
2  51  
3  19  
4  25  
38  14  50  34 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on December 10, 2012.
A  B  C  D  E  F  

1  26  
2  52  
6  11  21  8  14  18 
A  B  C  D  E  F  G  

1  64  
2  41  
15  20  10  5  25  7  23 
A  B  C  D  E  F  G  H  

1  43  
2  93  
6  27  19  14  10  24  15  21 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on January 7, 2012.
A  B  C  D  E  

1  48  
2  42  
3  64  
4  56  
12  74  24  45  55 
A  B  C  D  E  

1  47  
2  39  
3  7  57  
4  67  
15  46  21  72  56 
A  B  C  D  E  

1  63  
2  22  
3  16  54  
4  71  
41  34  57  63  15 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on February 4, 2013.
A  B  C  D  

1  32  
2  20  
3  46  
4  38  
51  13  25  47 
A  B  C  D  

1  2  24  
2  13  
3  54  
4  45  
22  39  31  44 
A  B  C  D  

1  7  20  
2  16  
3  10  53  
4  47  
37  23  46  30 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on March 4, 2013.
A  B  C  

1  15  
2  20  
3  10  
9  24  12 
A  B  C  E  

1  24  
2  2  17  
3  37  
11  23  31  13 
A  B  C  E  F  

1  38  
2  18  
3  64  
33  28  20  15  24 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on April 1, 2013.
A  B  C  E  F  

1  23  
2  32  
4  12  19  6  14 
A  B  C  E  F  G  

1  50  
2  28  
8  4  18  21  13  14 
A  B  C  E  F  G  H  

1  32  
2  73  
17  24  15  11  8  10  20 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on April 29, 2013.
A  B  C  D  

1  10  55  
2  25  
3  45  
4  11  
42  25  37  32 
A  B  C  D  

1  25  
2  30  
3  14  36  
4  45  
55  23  45  13 
A  B  C  D  

1  3  19  
2  37  
3  28  
4  52  
52  41  26  17 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on May 27, 2013.
A  B  C  D  

1  9  39  
2  10  23  
3  5  16  
23  29  15  11 
A  B  C  D  

1  16  
2  3  25  
3  37  
29  18  23  8 
A  B  C  D  

1  26  
2  38  
3  14  
18  23  28  9 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on June 24, 2013.
A  B  C  D  E  

1  17  
2  42  
3  14  61  
20  30  32  25  13 
A  B  C  D  E  

1  24  
2  35  
3  61  
24  19  29  11  37 
A  B  C  D  E  

1  18  
2  38  
3  64  
28  20  15  24  33 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on July 22, 2013.
A  B  C  D  E  

1  37  
2  18  
14  10  4  11  16 
A  B  C  D  E  F  

1  26  
2  52  
21  5  15  17  9  11 
A  B  C  D  E  F  G  

1  69  
2  36  
8  22  10  19  24  7  15 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on August 19, 2013.
A  B  C  D  

1  34  
2  23  
3  29  
4  50  
32  41  11  52 
A  B  C  D  

1  48  
2  16  
3  39  
4  33  
51  40  32  13 
A  B  C  D  

1  15  50  
2  47  
3  13  
4  26  
46  39  32  19 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on September 16, 2013.
A  B  C  D  

1  18  
2  3  28  
3  32  
14  24  32  8 
A  B  C  D  E  

1  40  
2  48  
3  32  
7  15  42  24  32 
A  B  C  D  E  

1  62  
2  20  
3  38  
18  22  36  29  15 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on October 14, 2013.
A  B  C  D  

1  40  
2  31  
3  44  
4  21  
45  26  53  12 
A  B  C  D  

1  55  
2  21  
3  27  
4  3  33  
17  29  52  38 
A  B  C  D  

1  21  
2  48  
3  14  39  
4  28  
53  23  44  16 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on December 9, 2013.
A  B  C  D  E  

1  41  
2  29  
3  50  
32  10  14  22  42 
A  B  C  D  E  

1  8  36  
2  59  
3  25  
13  23  40  17  27 
A  B  C  D  E  

1  42  
2  59  
3  19  
29  35  20  25  11 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on February 3, 2014.
A  B  C  D  E  

1  16  
2  39  
6  12  15  13  9 
A  B  C  D  E  F  

1  27  
2  51  
20  5  8  15  11  19 
A  B  C  D  E  F  G  

1  70  
2  35  
16  21  9  7  14  12  26 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on March 31, 2014.
A  B  C  D  

1  5  28  
2  42  
3  36  
4  30  
42  58  24  12 
A  B  C  D  

1  55  
2  3  23  
3  43  
4  15  
22  47  30  37 
A  B  C  D  

1  56  
2  27  
3  42  
4  11  
25  45  30  36 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on May 26, 2014.
A  B  C  D  E  

1  58  
2  39  
3  7  23  
21  8  35  25  31 
A  B  C  D  E  

1  39  
2  19  
3  62  
20  29  12  33  26 
A  B  C  D  E  

1  25  
2  6  44  
3  51  
14  10  33  39  24 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on July 21, 2014.
A  B  C  D  

1  17  
2  34  
3  27  
20  33  9  16 
A  B  C  D  E  

1  4  39  
2  20  
3  61  
13  29  36  19  23 
A  B  C  D  E  F  

1  82  
2  26  
3  7  63  
18  25  46  34  31  17 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on September 15, 2014.
A  B  C  D  

1  25  
2  32  
3  7  11  38  
4  41  
26  42  57  11 
A  B  C  D  

1  9  26  
2  12  
3  54  
4  44  
45  23  39  29 
A  B  C  D  

1  22  
2  43  
3  38  
4  33  
55  22  14  45 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on November 10, 2014.
A  B  C  D  E  

1  60  
2  2  16  
3  44  
28  24  34  15  19 
A  B  C  D  E  

1  4  52  
2  27  
3  41  
8  38  16  23  35 
A  B  C  D  E  

1  62  
2  37  
3  21  
17  26  13  30  34 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on January 5, 2015.
A  B  C  D  

1  24  
2  15  
3  11  39  
20  30  11  17 
A  B  C  D  E  

1  16  
2  64  
3  40  
24  21  16  32  27 
A  B  C  D  E  F  

1  60  
2  86  
3  25  
32  15  37  40  19  28 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on March 2, 2015.
A  B  C  D  

1  40  
2  30  
3  18  
4  48  
51  16  45  24 
A  B  C  D  

1  3  33  
2  31  
3  53  
4  19  
37  27  54  18 
A  B  C  D  

1  46  
2  23  
3  11  31  
4  36  
13  54  45  24 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on April 27, 2015.
A  B  C  D  E  

1  22  
2  37  
3  61  
24  28  37  19  12 
A  B  C  D  E  

1  5  21  
2  45  
3  54  
32  25  20  35  8 
A  B  C  D  E  

1  55  
2  2  18  
3  47  
25  18  12  29  36 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on June 22, 2015.
A  B  C  D  

1  6  2  32  
2  35  
3  43  
4  26  
44  25  56  11 
A  B  C  D  

1  41  
2  47  
3  19  
4  29  
17  24  55  40 
A  B  C  D  

1  37  
2  24  
3  43  
4  32  
43  11  26  56 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on August 17, 2015.
A  B  C  D  

1  17  
2  34  
3  27  
9  16  33  20 
A  B  C  D  E  

1  31  
2  42  
3  47  
26  42  13  8  31 
A  B  C  D  E  F  

1  10  54  
2  26  
3  91  
30  22  19  26  31  43 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on October 12, 2015.
A  B  C  D  E  

1  36  
2  11  62  
3  22  
19  30  12  24  35 
A  B  C  D  E  

1  9  39  
2  59  
3  22  
25  36  30  10  19 
A  B  C  D  E  F  

1  28  
2  66  
3  77  
31  19  47  14  23  37 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on December 28, 2015.
A  B  C  D  

1  31  
2  2  24  
3  44  
4  37  
43  57  19  17 
A  B  C  D  

1  37  
2  24  
3  14  44  
4  31  
42  56  11  27 
A  B  C  D  

1  50  
2  37  
3  17  
4  32  
19  27  34  56 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on March 21, 2016.
A  B  C  D  

1  3  17  
2  24  
3  37  
15  25  29  9 
A  B  C  D  E  

1  23  
2  12  38  
3  59  
18  11  25  38  28 
A  B  C  D  E  F  

1  32  
2  50  
3  89  
22  13  43  30  37  26 
The puzzles may be copied from this page using the clipboard and pasting them in a word processor for solving there or printing and working with paper and pen. The puzzles are also given in text format for easy loading for example in the Survo edit field, and in pdf format for printing through Adobe Reader.
The number in the parenthesis behind the name of the puzzle indicates a measure of difficulty.
The correct solutions will be published on June 20, 2016.
A  B  C  D  

1  8  40  
2  10  21  
3  13  5  42  
4  33  
55  43  26  12 
A  B  C  D  

1  11  33  
2  9  44  
3  10  20  
4  4  39  
24  14  43  55 
A  B  C  D  

1  37  
2  49  
3  7  21  
4  29  
15  54  42  25 