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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Sat Aug 28, 2010 4:52 pm Post subject: Puzzle 10/08/28: A |
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| Code: | +-----------------------+
| . . 1 | 3 . . | . 7 . |
| 7 . . | . . . | . 9 1 |
| . . 6 | . . . | . . . |
|-------+-------+-------|
| 8 . . | 9 . 7 | . 6 . |
| . . . | 1 . . | . 5 8 |
| . . 5 | 8 . 3 | . . . |
|-------+-------+-------|
| . . . | . . . | 5 1 . |
| 2 . . | 7 . . | . . . |
| . 9 . | . 3 . | . 2 . |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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JC Van Hay
Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
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| Posted: Sun Aug 29, 2010 8:12 am Post subject: |
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| Quote: | X Wing on 2 : (2)R35/c27 : => r124c27<>2
XY Wing (24-8) : (84)R1C2 (42)R2C3 (28)R2C6 : => r1c56,r2c2<>8
XY Wing (23-7) : (72)R5C7 (23)R4C9 (37)R7C9 : => r6c9 ,r9c7<>7
XY Wing (14-3) : (34)R2C1 (41)R4C2 (13)R4C7 : => r2c7<>3
BUG+1 : r1c7=4 |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sun Aug 29, 2010 2:16 pm Post subject: |
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I used the same five steps and in the same order as JC.
Ted |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Sun Aug 29, 2010 2:17 pm Post subject: |
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All those bivalues sent me xy chain hunting, three steps with a longish xy in the middle...
| Quote: | x-wing(2) ; r124c2<>2, r124c7<>2
xy-chain ; (4=1)r4c2 - (1=3)r4c7 - (3=2)r4c9* - (2=7)r5c7 - (7=9)r6c9 - (9=6)r8c9* - (26=4)r1c9 ; r1c2<>4
xy-wing(14-3) r4c2 ; r2c8<>3 |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sun Aug 29, 2010 9:18 pm Post subject: |
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| I used an XY-Wing (237), W-Wing(24), XY-Chain with a couple of extensions, Skyscraper (2) and BUG+3. |
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