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ZeroAssoluto
Joined: 05 Feb 2017
Posts: 940
Location: Rimini, Italy
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 Posted: Sun May 22, 2022 8:54 am Post subject: May 22 VH |
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Hi everyone,
| Code: |
+----------------+-------------+---------------+
| 456 1 46 | 9 7 2 | 3 468 58 |
| 4567 467 2 | 346 38 468 | 4569 1 59 |
| 3 8 9 | 46 1 5 | 46 2 7 |
+----------------+-------------+---------------+
| 1 3467 4678 | 2 9 48 | 457 3478 358 |
| 9 347 4578 | 1345 38 148 | 2 3478 6 |
| 2 34 458 | 345 6 7 | 19 348 19 |
+----------------+-------------+---------------+
| 67 5 3 | 8 2 16 | 167 9 4 |
| 467 2 467 | 167 5 9 | 8 367 13 |
| 8 9 1 | 67 4 3 | 67 5 2 |
+----------------+-------------+---------------+
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Play this puzzle online at the Daily Sudoku site
first step
X-Wing with number 6 in r39c47 and -6 in r2c47,r7c7,r8c4
| Code: |
+----------------+-------------+--------------+
| 456 1 46 | 9 7 2 | 3 468 58 |
| 4567 467 2 | 34 38 468 | 459 1 59 |
| 3 8 9 | 46 1 5 | 46 2 7 |
+----------------+-------------+--------------+
| 1 3467 4678 | 2 9 48 | 457 3478 358 |
| 9 347 4578 | 1345 38 148 | 2 3478 6 |
| 2 34 458 | 345 6 7 | 19 348 19 |
+----------------+-------------+--------------+
| 67 5 3 | 8 2 16 | 17 9 4 |
| 467 2 467 | 17 5 9 | 8 367 13 |
| 8 9 1 | 67 4 3 | 67 5 2 |
+----------------+-------------+--------------+
|
Play this puzzle online at the Daily Sudoku site
second step
XY-Wing 1,6,7 in r7c67,r9c7 and -6 in r9c4
Or, with a single pass, AIC in r7c6
r7c6 = 6 and -6 in r2c6,r89c4
r7c6 = 1 r8c9=1 r8c8=3 r1c8=6 r3c4=6 and -6 in r2c6,r89c4
Ciao Gianni |
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TomC
Joined: 30 Oct 2020
Posts: 358
Location: Wales
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| Posted: Sun May 22, 2022 10:06 am Post subject: |
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You can remove <6> from r8c8 which then allows basic moves to solve
| Code: |
+------------------+--------------+-----------------+
| 456 1 46 | 9 7 2 | 3 468 58 |
| 4567 467 2 | 346 38 468 | 4569 1 59 |
| 3 8 9 | 46 1 5 | 46 2 7 |
+------------------+--------------+-----------------+
| 1 3467 4678 | 2 9 48 | 457 3478 358 |
| 9 347 4578 | 1345 38 148 | 2 3478 6 |
| 2 34 458 | 345 6 7 | 19 348 19 |
+------------------+--------------+-----------------+
| *67 5 3 | 8 2 c16 | b167 9 4 |
| *467 2 *467 | 167 5 9 | 8 x367 13 |
| 8 9 1 | 67 4 3 | a67 5 2 |
+------------------+--------------+-----------------+
If x=6, a=7, b=1, c=6 leads to no <6> in box 7 *
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Play this puzzle online at the Daily Sudoku site |
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Ghostrider13
Joined: 25 May 2022
Posts: 4
Location: United Kingdom, Brimington
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| Posted: Thu May 26, 2022 10:06 am Post subject: |
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| TomC wrote: | You can remove <6> from r8c8 which then allows basic moves to solve
| Code: |
+------------------+--------------+-----------------+
| 456 1 46 | 9 7 2 | 3 468 58 |
| 4567 467 2 | 346 38 468 | 4569 1 59 |
| 3 8 9 | 46 1 5 | 46 2 7 |
+------------------+--------------+-----------------+
| 1 3467 4678 | 2 9 48 | 457 3478 358 |
| 9 347 4578 | 1345 38 148 | 2 3478 6 |
| 2 34 458 | 345 6 7 | 19 348 19 |
+------------------+--------------+-----------------+
| *67 5 3 | 8 2 c16 | b167 9 4 |
| *467 2 *467 | 167 5 9 | 8 x367 13 |
| 8 9 1 | 67 4 3 | a67 5 2 |
+------------------+--------------+-----------------+
If x=6, a=7, b=1, c=6 leads to no <6> in box 7 *
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Play this puzzle online at the Daily Sudoku site |
Nice one!  |
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