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TomC
Joined: 30 Oct 2020 Posts: 349 Location: Wales
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Posted: Tue Dec 07, 2021 9:51 am Post subject: Dec 07 VH |
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Code: |
+-------------+--------------+--------------+
| 3 5 89 | 689 169 4 | 7 189 2 |
| 6 28 2489 | 7 159 59 | 3 189 14 |
| 7 1 489 | 89 3 2 | 458 589 6 |
+-------------+--------------+--------------+
| 8 46 3 | 456 2 7 | 145 15 9 |
| 2 9 7 | 45 8 1 | 6 3 45 |
| 5 46 1 | 3469 469 369 | 2 7 8 |
+-------------+--------------+--------------+
| 4 38 58 | 2 7 359 | 1589 6 135 |
| 1 37 6 | 349 459 8 | 59 2 357 |
| 9 2378 258 | 1 56 356 | 58 4 357 |
+-------------+--------------+--------------+
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Play this puzzle at the Daily Sudoku site
145 XY wing in box 3 and 6 gives -1 in r12c8 |
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ZeroAssoluto
Joined: 05 Feb 2017 Posts: 872 Location: Rimini, Italy
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Posted: Tue Dec 07, 2021 2:53 pm Post subject: |
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Hi everyone,
after
Locked Candidates with number 8 in r79c7 and -8 in r3c7
W-Wing 4,5 in r3c7,r5c9 SL with number 5 in r34c8 and -4 in r2c9.r4c7
Ciao Gianni |
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TomC
Joined: 30 Oct 2020 Posts: 349 Location: Wales
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Posted: Tue Dec 07, 2021 6:16 pm Post subject: |
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Gianni, thanks for pointing out another basic move.
Code: |
+-------------+--------------+--------------+
| 3 5 89 | 689 169 4 | 7 189 2 |
| 6 28 2489 | 7 159 59 | 3 189 14 |
| 7 1 489 | 89 3 2 | 45 589 6 |
+-------------+--------------+--------------+
| 8 46 3 | 456 2 7 | 145 15 9 |
| 2 9 7 | 45 8 1 | 6 3 45 |
| 5 46 1 | 3469 469 369 | 2 7 8 |
+-------------+--------------+--------------+
| 4 38 58 | 2 7 359 | 1589 6 135 |
| 1 37 6 | 349 459 8 | 59 2 357 |
| 9 2378 258 | 1 56 356 | 58 4 357 |
+-------------+--------------+--------------+
|
Play this puzzle at the Daily Sudoku site
So from this position, you could also have:
-5 in r789c7 as then r3c7=4, r4c7=1, r4c8=5 leads to no <5>'s in box 3 |
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Mogulmeister
Joined: 03 May 2007 Posts: 1151
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Posted: Wed Dec 08, 2021 8:33 am Post subject: |
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Putting a 5 in r789c7 makes r3c7 = 4 and r2c9 = 1 which puts another 5 in r789c9 <357>.
You can't have two 5's in box 9 so r789c7 can not be 5. |
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