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immpy
Joined: 06 May 2017 Posts: 570
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Posted: Thu Aug 12, 2021 4:58 pm Post subject: VH 081221 |
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Hello all, enjoy the puzzle...
Code: |
+-------+-------+-------+
| 8 . 2 | 1 . 7 | 3 . 6 |
| . . . | . . . | . . . |
| . . 5 | . 3 . | 1 . . |
+-------+-------+-------+
| . . 8 | 5 . 4 | 7 . . |
| 4 5 1 | 9 . 8 | 6 3 2 |
| 9 . 7 | 3 . 6 | 4 . . |
+-------+-------+-------+
| . . 3 | . 6 . | 9 . . |
| . . . | . . . | . . . |
| 2 . 6 | 4 . 1 | 8 . 3 |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site
cheers...immp |
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ZeroAssoluto
Joined: 05 Feb 2017 Posts: 881 Location: Rimini, Italy
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Posted: Thu Aug 12, 2021 6:35 pm Post subject: |
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Hi everyone,
Code: |
+--------------+-------------+---------------+
| 8 49 2 | 1 45 7 | 3 59 6 |
| 13 13 49 | 6 458 259 | 25 25789 5789 |
| 67 67 5 | 28 3 29 | 1 2489 489 |
+--------------+-------------+---------------+
| 36 36 8 | 5 2 4 | 7 19 19 |
| 4 5 1 | 9 7 8 | 6 3 2 |
| 9 2 7 | 3 1 6 | 4 58 58 |
+--------------+-------------+---------------+
| 157 1478 3 | 278 6 25 | 9 12457 1457 |
| 157 14789 49 | 278 589 3 | 25 6 1457 |
| 2 79 6 | 4 59 1 | 8 57 3 |
+--------------+-------------+---------------+
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Play this puzzle online at the Daily Sudoku site
XY-Wing 4,5,9 r1c25,r9c5 and -9 in r9c2
Ciao Gianni |
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TomC
Joined: 30 Oct 2020 Posts: 352 Location: Wales
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Posted: Thu Aug 12, 2021 7:39 pm Post subject: |
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The 25 W wing in rows 7 and 8 give r8c4, r7c8 <>2 |
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Mogulmeister
Joined: 03 May 2007 Posts: 1151
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Posted: Fri Aug 13, 2021 10:16 am Post subject: |
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Code: | +--------------+-------------+---------------+
| 8 49b 2 | 1 45a 7 | 3 *59* 6 |
| 13 13 49 | 6 458 259 | 25 25789 5789 |
| 67 67 5 | 28 3 29 | 1 2489 489 |
+--------------+-------------+---------------+
| 36 36 8 | 5 2 4 | 7 19 19 |
| 4 5 1 | 9 7 8 | 6 3 2 |
| 9 2 7 | 3 1 6 | 4 58 58 |
+--------------+-------------+---------------+
| 157 1478 3 | 278 6 25 | 9 12457 1457 |
| 157 14789 49 | 278 589 3 | 25 6 1457 |
| 2 79c 6 | 4 *59* 1 | 8 57d 3 |
+--------------+-------------+---------------+ |
There's a simple XY chain follow a to d. Pincers for 5 at a and d.
Gets rid of 5 at r1c8 and r9c5 shown by * |
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Mogulmeister
Joined: 03 May 2007 Posts: 1151
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Posted: Fri Aug 13, 2021 11:51 am Post subject: |
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…and the Eureka
(5=4)r1c5-(4=9)r1c2-(9=7)r9c2-(7=5)r9c8 ==> r1c8, r9c5 <> 5
Essentially if you turn off the 5 at one pincer end the pincer at the other end will turn 5 on. |
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