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| Aidy
| Joined: 26 Jul 2005 | Posts: 2 | : | | Items |
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Posted: Tue Jul 26, 2005 4:31 pm Post subject: X-wing strategy |
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I'm writing a solver (I think the world needs another one) and my x-wing technique looks for pairs in each row then eleminates the number from the candidates on the relevant columns.
Am I right in thinking it should also do it the other way and check for pairs in columns then eliminate candiates in the relevant row? |
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| chabo
| Joined: 26 Jul 2005 | Posts: 1 | : | Location: Belgium | Items |
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Posted: Tue Jul 26, 2005 9:42 pm Post subject: |
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Indeed, you have to check the columns too.
More info on X-Wings can be found at:
http://www.daily-sudoku.tk |
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