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ZeroAssoluto
Joined: 05 Feb 2017
Posts: 1019
Location: Rimini, Italy
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 Posted: Fri Apr 01, 2022 8:31 am Post subject: Apr 01 VH |
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Hi everyone,
| Code: |
+------------+-------------+--------------+
| 8 7 239 | 2359 4 2359 | 1 39 6 |
| 259 4 1 | 2389 6 2389 | 357 379 389 |
| 569 56 39 | 389 1 7 | 345 2 3489 |
+------------+-------------+--------------+
| 7 28 5 | 148 3 148 | 9 6 24 |
| 4 9 28 | 78 5 6 | 37 1 23 |
| 1 3 6 | 479 2 49 | 8 47 5 |
+------------+-------------+--------------+
| 25 1 7 | 6 8 25 | 34 349 349 |
| 69 68 89 | 34 7 34 | 2 5 1 |
| 3 25 4 | 125 9 125 | 6 8 7 |
+------------+-------------+--------------+
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Play this puzzle online at the Daily Sudoku site
XY-Wing 3,4,7 in r57c7,r6c8 and -4 in r7c8
Ciao Gianni |
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TomC
Joined: 30 Oct 2020
Posts: 359
Location: Wales
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| Posted: Sun Apr 03, 2022 6:13 pm Post subject: |
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| Code: |
+-------------+-------------+---------------+
| 8 7 239 | 2359 4 2359 | 1 39 6 |
| 259 4 1 | 2389 6 2389 | 357 379 389 |
| 569 56b 39 | 389 1 7 | 345a 2 3489 |
+-------------+-------------+---------------+
| 7 28d 5 | 148 3 148 | 9 6 24e |
| 4 9 28 | 78 5 6 | 37 1 23 |
| 1 3 6 | 479 2 49 | 8 47 5 |
+-------------+-------------+---------------+
| 25 1 7 | 6 8 25 | 34 349 349 |
| 69 68c 89 | 34 7 34 | 2 5 1 |
| 3 25 4 | 125 9 125 | 6 8 7 |
+-------------+-------------+---------------+
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If a=5 then e=4 leads to no <4> in box 3 (or a=4 if you like)
so r2c7 = 5 to solve
Or you could say that it doesn't matter what value is in b, c, d or e because then a cannot be <5> |
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