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| dfhwze
| | Joined: 15 Feb 2006 | | Posts: 6 | | : | |
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 Posted: Thu Feb 16, 2006 2:19 pm Post subject: use of n-gonks in 9x9-sudokus |
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hi,
I'm wondering if anyone has 9x9-sudoku-grids where you can use a squirmbag or an N-gonk of N > 5 .
Maybe these types of x-wing are impossible in classic sudokus, then I won't bother making them in my solver ... |
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| Ruud
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 | | Joined: 17 Sep 2005 | | Posts: 708 | | : | | Location: Netherlands |
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| Posted: Thu Feb 16, 2006 2:42 pm Post subject: |
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Hi,
X-Wing, Swordfish, etc. always have a complement, like disjoint subsets. When you find a Squirmbag (N=5) in the rows, and all 9 positions for the digit are unbound, you will also find a Jellyfish (N=4) in the columns.
It depends on the search method you use, but N= 2 to 4 should find everything in a 9x9 sudoku.
Ruud.
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Meet me at sudocue.net |
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| dfhwze
| | Joined: 15 Feb 2006 | | Posts: 6 | | : | |
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| Posted: Thu Feb 16, 2006 3:34 pm Post subject: |
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| thx , this info is what i needed |
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