Appearing sequence

Advanced methods and approaches for solving Sudoku puzzles

Appearing sequence

Postby Jack B. » Sun Mar 19, 2006 4:17 am

Could anyone tell me if I can spot anything from the following sequence:
when I get three cells in a block (not necessarily in a straight line)...and I have 3 numbers which appear as follows - 12 - 23 - 123. I'll have this combination come up several times during each puzzle. I can eventually solve this...I was wanting to know if there was any shortcut to save some time.
Jack B.
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Postby MrHamilton » Sun Mar 19, 2006 6:00 am

The answer may be "it depends on what else is going on."
Often in practice one can exclude the extra digit (in this case exclude the 2 from the 1-2-3).
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Postby Myth Jellies » Sun Mar 19, 2006 8:15 am

Those three cells form a naked triple. You can remove 123 from any other cell that contains them in that box. In general, there is no other certain reduction you can make with those candidates.
Myth Jellies
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