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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Sun Mar 08, 2009 10:52 am Post subject: Set Q Puzzle 46 |
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| Code: | +-----------------------+
| 8 9 . | 5 . 3 | . . . |
| 3 5 . | . 6 . | 1 9 . |
| . . . | . . 9 | 3 . 4 |
|-------+-------+-------|
| 7 . . | . . 5 | . . . |
| . 6 . | . 3 . | . . . |
| 9 . 8 | 6 . 4 | 5 . 7 |
|-------+-------+-------|
| . 7 5 | . . 8 | 6 . . |
| . 8 . | . . . | . 4 . |
| . . 3 | . . 6 | . . . |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Mon Mar 09, 2009 11:34 pm Post subject: |
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UR, xyz-wing
then it gets interesting.
x-wing on 9's
w-wing {7,8} removes 7 from r9c4 |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Tue Mar 10, 2009 4:17 pm Post subject: |
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I started with a Type 1 UR 12,
a chain: (6=2)r1c9 - (2)r1c7 = (2)r8c7 - (2=3)r7c8 - (3=6)r4c8; r4c9<>6,
x-wing on 9,
Bug+1 completes the task.
Ted |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed Mar 11, 2009 12:19 am Post subject: |
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| I wanted to avoid the UR. XYZ-Wing on 278, then Skyscraper and multi-coloring on 2, then Remote Pairs on 89 and W-Wing on 78. The skyscraper and multi-coloring might not have been needed since I found a locked candidate that probably would have eliminated the 2s. |
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