Survo puzzles: www.survo.fi/puzzles --------------------------------------- Copyright (c) Survo Systems 2006-2014 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 345/2014 (175) #443-50656 A B C D 1 * * * * 25 2 * * * * 32 3 7 11 * * 38 4 * * * * 41 26 42 57 11 Survo puzzle 346/2014 (300) #443-76427 A B C D 1 9 * * * 26 2 * * * * 12 3 * * * * 54 4 * * * * 44 45 23 39 29 Survo puzzle 347/2014 (850) #443-19215 A B C D 1 * * * * 22 2 * * * * 43 3 * * * * 38 4 * * * * 33 55 22 14 45