Survo puzzles: www.survo.fi/puzzles --------------------------------------- Copyright (c) Survo Systems 2006-2015 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 363/2015 (100) #343-30488 A B C D 1 * * * * 17 2 * * * * 34 3 * * * * 27 9 16 33 20 Survo puzzle 364/2015 (500) #353-41882 A B C D E 1 * * * * * 31 2 * * * * * 42 3 * * * * * 47 26 42 13 8 31 Survo puzzle 365/2015 (550) #363-70320 A B C D E F 1 10 * * * * * 54 2 * * * * * * 26 3 * * * * * * 91 30 22 19 26 31 43