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 243/2011 (30) #252-40772 A B C D E 1 * * * * * 32 2 * * * * * 23 6 12 19 4 14 Survo puzzle 244/2011 (150) #263-67360 A B C D E F 1 * * * * * * 33 2 * * * * * * 45 15 10 20 7 22 4 Survo puzzle 245/2011 (300) #273-75790 A B C D E F G 1 * * * * * * * 62 2 * * * * * * * 43 21 9 5 27 19 17 7