Survo puzzles: www.survo.fi/puzzles --------------------------------------- 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 240/2011 (400) #353-20228 A B C D E 1 * 3 * * * 24 2 * * * * * 56 3 * * * * * 40 9 17 37 26 31 Survo puzzle 241/2011 (700) #353-29774 A B C D E 1 * * * * * 50 2 * * * * * 41 3 * * * * * 29 22 10 32 42 14 Survo puzzle 242/2011 (700) #353-63562 A B C D E 1 * * * * * 62 2 * * * * * 34 3 * * * * * 24 24 19 12 28 37