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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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 Posted: Mon Dec 21, 2009 8:00 pm Post subject: sudoku.com.au 12-21-09 tough |
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000030500300200900000600203000008090100050006040700000508007000003001002007090000
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+-------+-------+-------+
| . . . | . 3 . | 5 . . |
| 3 . . | 2 . . | 9 . . |
| . . . | 6 . . | 2 . 3 |
+-------+-------+-------+
| . . . | . . 8 | . 9 . |
| 1 . . | . 5 . | . . 6 |
| . 4 . | 7 . . | . . . |
+-------+-------+-------+
| 5 . 8 | . . 7 | . . . |
| . . 3 | . . 1 | . . 2 |
| . . 7 | . 9 . | . . . |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Tue Dec 22, 2009 3:27 am Post subject: |
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Three steps.
| Quote: | skyscraper 7 in r4c19,
flightless xy-wing 67-8 with vertex 67 in r4c1 and pseudocell 68 in r9c19 plus transport,
another flightless xy-wing on4-78 with vertex 48 in r3c8 plus transport.
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I noticed a couple possible deadly patterns, but could not find any deductions.
Ted |
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