Survo puzzles: www.survo.fi/puzzles --------------------------------------- Copyright (c) Survo Systems 2006-2009 The easiest way to solve these problems may be using a Java Applet http://www.survo.fi/swap/puzzles.html based on the swapping method. Survo puzzle 171/2009 (10) #353-68348 A B C D E 1 * * 8 * * 43 2 * * * 3 4 16 3 * 7 * * * 61 32 14 21 25 28 Survo puzzle 172/2009 (140) #353-1392 A B C D E 1 * * * * * 62 2 * * 6 * * 19 3 * * * * * 39 14 18 33 31 24 Survo puzzle 173/2009 (420) #353-10195 A B C D E 1 * * * * * 37 2 * * * * * 21 3 * * * * * 62 26 13 17 30 34