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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Thu May 07, 2009 8:50 am Post subject: Puzzle NR_011 |
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| Code: | +-----------------------+
| 4 5 . | 1 . . | 8 7 . |
| 9 . . | . . . | . . . |
| . . 1 | . . . | 2 4 3 |
|-------+-------+-------|
| 2 . . | 5 . . | 9 . 8 |
| . . . | . . . | . 5 4 |
| . . . | . . 9 | . 2 . |
|-------+-------+-------|
| 8 . 9 | 3 . . | . 1 . |
| 1 . 5 | . 4 8 | 7 . 6 |
| . . 2 | 9 1 . | . 8 . |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Fri May 08, 2009 2:19 am Post subject: |
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Still another interesting puzzle. | Quote: | finned x-wing on 6,
w-wing 67 with a grouped strong link on 6,
xy-wing 146 with pivot 14 in r4c6.
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Ted |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Fri May 08, 2009 8:08 am Post subject: |
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| Code: | .------------------.------------------.------------------.
| 4 5 36 | 1 26 23 | 8 7 9 |
| 9 2 378 | 478 78 34 | 5 6 1 |
|*67 *678 1 | 678 9 5 | 2 4 3 |
:------------------+------------------+------------------:
| 2 167 467 | 5 67 14 | 9 3 8 |
| 3 9 678 | 678 2678 12 | 16 5 4 |
| 5 168 468 | 468 3 9 | 16 2 7 |
:------------------+------------------+------------------:
| 8 *67 9 | 3 5 *67 | 4 1 2 |
| 1 3 5 | 2 4 8 | 7 9 6 |
|*67 4 2 | 9 1 *67 | 3 8 5 |
'------------------'------------------'------------------' |
this puzzle has a deadly loop marked above on {6,7}
r3c2 has to be 8
excluding that move,
I found this extended w-wing
(7=6)r3c1 - (6)r1c3 = (6)r1c5 - (6=7)r4c5 - (7)r4c23 = (7)r5c3; r2c3 <> 7
then xy-wing
(6=8)r3c4 - (8=7)r2c5 - (7=6)r4c5; r56c4 and r1c5 is not 6 |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Fri May 08, 2009 2:48 pm Post subject: |
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| storm_norm wrote: | this puzzle has a deadly loop marked above on {6,7}
r3c2 has to be 8
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Nice Catch!!! |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sun May 10, 2009 6:42 pm Post subject: |
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| I used an XY-Chain which may have been unneeded, then a Finned X-Wing on 6. Finished with what Norm calls a mixed-W-Wing. |
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