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ZeroAssoluto
Joined: 05 Feb 2017
Posts: 1019
Location: Rimini, Italy
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 Posted: Wed Dec 21, 2022 10:53 am Post subject: Dec 21 VH |
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Hi everyone,
| Code: |
+-----------+-------------+------------+
| 57 2 4 | 379 359 8 | 6 1 39 |
| 58 6 38 | 239 2359 1 | 7 29 4 |
| 1 9 37 | 237 4 6 | 5 8 23 |
+-----------+-------------+------------+
| 28 5 6 | 239 1 4 | 238 7 289 |
| 3 48 89 | 5 29 7 | 248 6 1 |
| 247 1 79 | 6 8 39 | 234 29 5 |
+-----------+-------------+------------+
| 9 3 2 | 8 6 5 | 1 4 7 |
| 6 7 1 | 4 39 39 | 28 5 28 |
| 48 48 5 | 1 7 2 | 9 3 6 |
+-----------+-------------+------------+
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Play this puzzle online at the Daily Sudoku site
| Quote: | XY-Wing 2,8,9 in r4c1,r5c35 and -2 in r4c4
or
Skyscraper with number 2 in r25c5,r26c8 and -2 in r5c7
or
2 String Kite with number 2 in r26c8,r5c57 and -2 in r2c5
or
W-Wing 2,9 in r5c5,r6c8 SL with number 9 in r4c49 and -2 in r5c7
or
W-Wing 2,9 in r5c5,r6c8 SL with number 9 in r56c3 and -2 in r5c7 |
Ciao Gianni |
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storm_norm22
Joined: 24 Oct 2020
Posts: 21
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| Posted: Wed Dec 21, 2022 4:52 pm Post subject: |
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| Quote: |
xy-wing completes it
interestingly, the xyz-wing that eliminates the 2 in r4c7 doesn't do anything.
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TomC
Joined: 30 Oct 2020
Posts: 359
Location: Wales
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| Posted: Wed Dec 21, 2022 5:52 pm Post subject: |
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I found the XY wing as well, but it revealed itself long before basics were completed
Looking at the above grid I see an XY chain in r3c39 and r6c38 (23-37-79-29) which removes <2> from r2c8 and r4c9 to solve |
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