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Log in| Search found 4 matches |
| Author | Message |
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 Topic: XY Chain Interpretation |
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| chriswarren Replies: 8 Views: 31391 |
 Forum: Daily Sudoku puzzles Posted: Fri Oct 01, 2010 6:46 pm Subject: XY Chain Interpretation |
| Thanks Marty!
Have finally twigged. The key point in your last link was that the number you elimate from the pincered cell has to be the one that is "unused" in the end of the chain (i.e. ... |
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| Topic: XY Chain Interpretation |
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| chriswarren Replies: 8 Views: 31391 |
Forum: Daily Sudoku puzzles Posted: Fri Oct 01, 2010 11:19 am Subject: XY Chain Interpretation |
| Hi Marty and Danny,
Many thanks for your help. I'm obviously missing something. I've reread the sudopedia article - and I still feel that in the example I've given, there are two XY chains i.e. ... |
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| Topic: XY Chain Interpretation |
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| chriswarren Replies: 8 Views: 31391 |
Forum: Daily Sudoku puzzles Posted: Thu Sep 30, 2010 6:57 pm Subject: XY Chain Interpretation |
| Hi Marty - thanks for the response - but I'm still confused!
Maybe I've got the name of the strategy wrong, but I thought that if you follow a chain of bi-value cells where they always share a digi ... |
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| Topic: XY Chain Interpretation |
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| chriswarren Replies: 8 Views: 31391 |
Forum: Daily Sudoku puzzles Posted: Thu Sep 30, 2010 2:05 pm Subject: XY Chain Interpretation |
| Trying to solve the puzzle below via XY chains appears to give two answers to R1C4??
Starting from R1C6 -> R4C6-> R5C6->R6C4 -> suggests you can remove the 5 out of R1C4... ...and R1 ... |
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