Survo puzzles: www.survo.fi/puzzles
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Copyright (c) Survo Systems 2006-2009

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 180/2009 (850) #353-55552

   A  B  C  D  E
1  *  *  *  *  * 39
2  *  *  *  *  * 51
3  *  *  *  *  * 30
  28 13  8 31 40

Survo puzzle 181/2009 (7000) #453-36744

   A  B  C  D  E
1  *  3  *  *  * 57
2  *  *  *  *  * 30
3  *  *  *  *  * 71
4  *  *  *  *  * 52
  46 16 23 59 66

Survo puzzle 182/2009 (9000) #453-16184

   A  B  C  D  E
1  *  *  *  *  * 72
2  *  *  *  *  * 63
3  *  *  *  *  * 19
4  *  *  *  *  * 56
  41 19 51 33 66