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ZeroAssoluto
Joined: 05 Feb 2017
Posts: 941
Location: Rimini, Italy
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 Posted: Tue Jun 27, 2017 10:39 pm Post subject: Jun 28 VH |
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Hi everyone,
| Code: |
+-----------+-------------+-----------+
| 26 29 368 | 139 4 169 | 7 89 5 |
| 5 49 346 | 7 8 69 | 1 2 34 |
| 1 7 348 | 5 39 2 | 38 489 6 |
+-----------+-------------+-----------+
| 8 1 5 | 4 23 7 | 9 6 23 |
| 4 6 7 | 39 239 8 | 23 5 1 |
| 23 23 9 | 6 1 5 | 4 7 8 |
+-----------+-------------+-----------+
| 9 5 46 | 8 7 3 | 26 1 24 |
| 7 8 1 | 2 6 4 | 5 3 9 |
| 36 34 2 | 19 5 19 | 68 48 7 |
+-----------+-------------+-----------+
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Play this puzzle online at the Daily Sudoku site
many solutions this time too
| Quote: | W-Wing 3,9 in r3c5,r5c4 connected by number 3 in r35c7 and -9 in r1c4 and r5c5;
XY-Wing 3,8,9 in r3c57, r1c8 and -9 in r1c46 and r3c8;
and some Skyscraper for example
with number 4 in r3c38, r7c39 and -4 in r2c9 and r9c8. |
Ciao Gianni |
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Ajò Dimonios
Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
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| Posted: Wed Jun 28, 2017 11:15 am Post subject: |
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Hi everyone
My solution
Forcing chain [ (3-8)R1C3=(8)R3C3-(8)R3C7 and (3)R1C3-(3)R1C4=(3)R3C5-(3)R3C7]=>contradiction R3C7=Ø=>-3R1C3=> solution stte.
Ciao a tutti |
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dongrave
Joined: 06 Mar 2014
Posts: 568
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| Posted: Thu Jun 29, 2017 1:27 am Post subject: |
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| Of course the 'standard' solution (involving only X, XY, or XYZ wings), the solution would be the 38-9 XY Wing with pivot at r3c7 removing the 9 from r3c8 (and r1c46). |
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