Survo puzzles: www.survo.fi/puzzles
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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 222/2011 (50) #252-77838

   A  B  C  D  E
1  *  *  *  *  * 35
2  *  *  *  *  * 20
  11  8 14 18  4

Survo puzzle 223/2011 (60) #263-83918

   A  B  C  D  E  F
1  *  *  *  *  *  * 24
2  *  *  *  *  *  * 54
   6  9 19 18 14 12

Survo puzzle 224/2011 (230) #274-16228

   A  B  C  D  E  F  G
1  *  *  *  *  *  *  * 69
2  *  *  *  *  *  *  * 36
  12 17  9 14  6 26 21