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 204/2010 (30) #252-48015 A B C D E 1 * * * * * 20 2 * * * * * 35 10 9 18 14 4 Survo puzzle 205/2010 (40) #262-5380 A B C D E F 1 * * * * * * 22 2 * * * * * * 56 8 14 16 12 9 19 Survo puzzle 206/2010 (210) #273-73490 A B C D E F G 1 * * * * * * * 33 2 * * * * * * * 72 21 7 14 24 9 17 13