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immpy
Joined: 06 May 2017
Posts: 574
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 Posted: Mon Apr 08, 2019 4:41 am Post subject: A Very Interesting VH 040719 |
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Hello all,
If anyone is trying to become more familiar with various advanced solving techniques, this puzzle has several examples of some of them. There is a rare Sue de Coq, an X-Chain, a pair of AICs, and a Hidden Rectangle just to list a few that one might choose to implement in solving. For this reason, I found it very interesting, and instructional. And yet, having stated that, it can be solved simply if one uses only VH techniques, so there is no need to use anything more, if one so chooses.
Have fun with it...enjoy the puzzle....
| Code: |
+-------+-------+-------+
| . . . | 8 4 . | 5 . . |
| 4 . . | 7 . . | . 8 . |
| . . . | . 9 . | . . 3 |
+-------+-------+-------+
| 1 . . | . . 4 | . . . |
| . 3 5 | . . . | 8 . 6 |
| . 2 . | . . . | . 5 1 |
+-------+-------+-------+
| 3 7 . | . 5 . | . . . |
| . . 1 | 3 2 . | . . . |
| . . 8 | . . 1 | . 9 . |
+-------+-------+-------+
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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: 1019
Location: Rimini, Italy
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| Posted: Mon Apr 08, 2019 9:38 am Post subject: |
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Hi everyone,
| Code: |
+-----------------+--------------+---------------+
| 679 169 23679 | 8 4 236 | 5 1267 279 |
| 4 1569 2369 | 7 36 2356 | 1269 8 29 |
| 5678 568 267 | 1 9 256 | 4 267 3 |
+-----------------+--------------+---------------+
| 1 689 679 | 5 68 4 | 279 3 279 |
| 79 3 5 | 2 1 79 | 8 4 6 |
| 6789 2 4 | 69 368 3679 | 79 5 1 |
+-----------------+--------------+---------------+
| 3 7 69 | 469 5 689 | 12 12 48 |
| 59 459 1 | 3 2 89 | 67 67 458 |
| 2 456 8 | 46 7 1 | 3 9 45 |
+-----------------+--------------+---------------+
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Play this puzzle online at the Daily Sudoku site
XYZ-Wing 6,8,9 in r7c36,r8c6 and -9 in r7c4
Ciao Gianni |
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Clement
Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
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| Posted: Mon Apr 08, 2019 10:45 am Post subject: A Very Interesting VH 040719 |
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| Code: |
+-----------------------+---------------------+---------------------+
| 679 169 23679 | 8 4 236 | 5 1267 279 |
| 4 1569 2369 | 7 36 2356 | 1269 8 29 |
| 5678 568 267 | 1 9 256 | 4 267 3 |
+-----------------------+---------------------+---------------------+
| 1 689 679 | 5 68 4 | 279 3 279 |
| 79 3 5 | 2 1 79 | 8 4 6 |
| 6789 2 4 | 69 368 36789 | 79 5 1 |
+-----------------------+---------------------+---------------------+
| 3 7 69 |d46-9 5 689 | 12 12 c48 |
| 59 459 1 | 3 2 a89 | 67 67 b458 |
| 2 456 8 | 46 7 1 | 3 9 45 |
+-----------------------+---------------------+---------------------+
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(9=8)r8c6 - r8c9 = (8-4)r7c9 = (4)r7c4 => - 9r7c4; stte |
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