Survo puzzles: www.survo.fi/puzzles --------------------------------------- Copyright (c) Survo Systems 2006-2008 The easiest way to solve these three problems may be using a new Java Applet http://www.survo.fi/swap/puzzles.html based on the swapping method. Survo puzzle 153/2009 (55) #363-23882 A B C D E F 1 12 * 8 * * * 57 2 * 4 * 6 * * 69 3 * * * * * 15 45 34 7 26 14 41 49 Survo puzzle 154/2009 (1400) #363-77612 A B C D E F 1 * * * 6 * * 34 2 * * * * * * 73 3 * * * * * * 64 34 16 45 29 39 8 Survo puzzle 155/2009 (1300) #362-90572 A B C D E F 1 * * * * * * 93 2 * * * * * * 56 3 * * * * * * 22 27 33 24 37 30 20