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ZeroAssoluto
Joined: 05 Feb 2017 Posts: 872 Location: Rimini, Italy
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Posted: Fri Dec 22, 2023 9:33 am Post subject: Dec 22 VH |
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Hi everyone,
Code: |
+-----------+---------------+---------------+
| 4 68 2 | 39 38 5 | 1 3689 7 |
| 1 7 3 | 6 248 29 | 489 489 5 |
| 68 5 9 | 1 3478 37 | 2 3468 468 |
+-----------+---------------+---------------+
| 269 3 8 | 4 5 12 | 7 69 169 |
| 79 1 5 | 8 37 6 | 49 2 349 |
| 267 26 4 | 237 9 1237 | 68 5 1368 |
+-----------+---------------+---------------+
| 258 289 7 | 25 26 4 | 3 1 689 |
| 25 249 1 | 235 236 8 | 469 7 469 |
| 3 48 6 | 79 1 79 | 5 48 2 |
+-----------+---------------+---------------+
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Play this puzzle online at the Daily Sudoku site
Quote: |
XY-Wing 3,7,9 in r19c4,r3c6 and -7 in r9c6
or
XY-Wing 3,7,9 in r1c4,r39c6 and -9 in r2c6,r9c4
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Ciao Gianni |
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TomC
Joined: 30 Oct 2020 Posts: 349 Location: Wales
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Posted: Fri Dec 22, 2023 1:44 pm Post subject: Another way to solve |
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Remove <3> from r1c4 or r8c5 to solve
Code: | +-------------+-----------------+---------------+
| 4 68 2 | a39 b38 5 | 1 3689 7 |
| 1 7 3 | 6 248 29 | 489 489 5 |
| c68 5 9 | 1 3478 37 | 2 3468 468 |
+-------------+-----------------+---------------+
| 269 3 8 | 4 5 12 | 7 69 169 |
| 79 1 5 | 8 37 6 | 49 2 349 |
| 267 26 4 | 237 9 1237 | 68 5 1368 |
+-------------+-----------------+---------------+
| .258 289 7 | .25 26 4 | 3 1 689 |
| .25 249 1 | .235 a236 8 | 469 7 469 |
| 3 48 6 | 79 1 79 | 5 48 2 |
+-------------+-----------------+---------------+
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Quote: | If a=3, b=8, c=8 leads to a <25> UR in r78c14 |
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