The Past Master Club
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HOW TO SOLVE CROSS ADDITION!



Table with addition values across in blue and down in red.
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The squares that contain max. values are easy to fill; such as:
2 SQS 3 SQS 4 SQS 5 SQS 6 SQS 7 SQS 8 SQS
3
=1,2
4
=1,3 		6
=1,2,3
7
=1,2,4 		10
=1,2,3,4
11
=1,2,3,5 		15
=1,2,3,4,5
16
=1,2,3,4,6 		21
=1,2,3,4,5,6
22
=1,2,3,4,5,7 		28
=1,2,3,4,5,6,7
29
=1,2,3,4,5,6,8 		36
=1,2,3,4,5,6,7,8
37
=1,2,3,4,5,6,7,9
45=1,2,3,4,5,6,7,8,9
17
=9,8
16
=9,7 		24
=9,8,7
23
=9,8,6 		30
=9,8,7,6
29
=9,8,7,5 		35
=9,8,7,6,5
34
=9,8,7,6,4 		39
=9,8,7,6,5,4
38
=9,8,7,6,5,3 		42
=9,8,7,6,5,4,3
41
=9,8,7,6,5,4,2 		44
=9,8,7,6,5,4,3,2
43
=9,8,7,6,5,4,3,1

which usually lead to a solution as shown below.
NOTE: X == not allowed
          Underlined are crossed out.
          Both == eliminated.
          Dot == eliminated.
          Triangle == decision
          Numbers indicate all possibilities for those squares.

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Continuation!
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Continuation!
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Continuation!
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Continuation!
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Done: nothing to it!
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