Survo puzzles: www.survo.fi/puzzles --------------------------------------- Copyright (c) Survo Systems 2006-2010 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 189/2010 (220) #353-28358 A B C D E 1 * * * * * 38 2 12 * * * * 61 3 * * * * * 21 22 34 29 10 25 Survo puzzle 190/2010 (850) #353-32944 A B C D E 1 * * * * * 27 2 * * * * * 38 3 * * * * * 55 30 7 39 25 19 Survo puzzle 191/2010 (6000) #453-2518 A B C D E 1 * * * * * 62 2 * * * 4 * 27 3 * * * * * 80 4 * * * * * 41 48 30 69 40 23