Survo puzzles: www.survo.fi/puzzles
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Copyright (c) Survo Systems 2006-2011

The easiest way to solve these three problems may be
using a Java Applet
http://www.survo.fi/swap/puzzles.html
based on the swapping method.

Survo puzzle 255/2011 (30) #353-35906

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

Survo puzzle 256/2011 (230) #353-84662

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

Survo puzzle 257/2011 (330) #353-76546

   A  B  C  D  E
1  *  *  *  *  * 18
2  *  *  *  *  * 57
3  *  *  *  *  * 45
  37 27 20 24 12