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immpy
Joined: 06 May 2017 Posts: 571
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Posted: Sun Nov 29, 2020 4:02 pm Post subject: VH 112920 |
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Hello all, enjoy the puzzle...
Code: |
+-------+-------+-------+
| . 7 . | . . 8 | . . 4 |
| . 5 9 | 7 . . | . 8 . |
| 6 . 8 | . . . | 3 . . |
+-------+-------+-------+
| . . 1 | 9 8 . | . . 5 |
| . . . | 1 . 7 | . . . |
| 2 . . | . 5 3 | 1 . . |
+-------+-------+-------+
| . . 4 | . . . | 5 . 6 |
| . 2 . | . . 1 | 4 9 . |
| 9 . . | 5 . . | . 1 . |
+-------+-------+-------+
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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: 933 Location: Rimini, Italy
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Posted: Sun Nov 29, 2020 8:54 pm Post subject: |
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Hi everyone,
Code: |
+----------------+---------------+----------------+
| 13 7 2 | 36 1369 8 | 69 5 4 |
| 134 5 9 | 7 12346 246 | 26 8 12 |
| 6 14 8 | 24 1249 5 | 3 27 1279 |
+----------------+---------------+----------------+
| 47 346 1 | 9 8 246 | 27 23467 5 |
| 458 34689 356 | 1 246 7 | 289 2346 2389 |
| 2 89 67 | 46 5 3 | 1 467 89 |
+----------------+---------------+----------------+
| 178 138 4 | 238 237 9 | 5 237 6 |
| 578 2 3567 | 368 367 1 | 4 9 378 |
| 9 368 367 | 5 23467 246 | 278 1 2378 |
+----------------+---------------+----------------+
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Play this puzzle online at the Daily Sudoku site
XY-Chain r6c4-6-r1c4-3-r1c1-1-r3c2 and -4 in r3c4
Code: |
+--------------+---------------+-------------+
| 13 7 2 | 36 1369 8 | 69 5 4 |
| 13 5 9 | 7 1346 46 | 26 8 12 |
| 6 4 8 | 2 19 5 | 3 7 19 |
+--------------+---------------+-------------+
| 4 36 1 | 9 8 26 | 7 23 5 |
| 58 3689 356 | 1 26 7 | 289 4 2389 |
| 2 89 7 | 4 5 3 | 1 6 89 |
+--------------+---------------+-------------+
| 78 1 4 | 38 237 9 | 5 23 6 |
| 578 2 356 | 368 367 1 | 4 9 378 |
| 9 368 36 | 5 23467 246 | 28 1 2378 |
+--------------+---------------+-------------+
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Play this puzzle online at the Daily Sudoku site
Skyscraper with number 2 in r4c68,r7c58 and -2 in r5c5,r9c6
Ciao Gianni |
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Clement
Joined: 24 Apr 2006 Posts: 1111 Location: Dar es Salaam Tanzania
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Posted: Tue Dec 01, 2020 11:23 am Post subject: VH 112920 |
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Code: |
+--------------------+--------------------+--------------------+
| 13 7 2 | 36 1369 8 | 69 5 4 |
| 134 5 9 | 7 12346 246 | 26 8 12 |
| 6 14 8 | c24 1249 5 | 3 b27 1279 |
+--------------------+--------------------+--------------------+
| 47 346 1 | 9 8 246 | 27 23467 5 |
| 458 34689 356 | 1 246 7 | 289 2346 2389 |
| 2 4689 a7-6 |da46 5 3 | 1 a467 789 |
+--------------------+--------------------+--------------------+
| 178 138 4 | 238 237 9 | 5 237 6 |
| 578 2 3567 | 368 367 1 | 4 9 378 |
| 9 368 367 | 5 23467 246 | 278 1 2378 |
+--------------------+--------------------+--------------------+
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Step 1: 647r6c348 - (7=2)r3c8 - (2=4)r3c4 - (4=6)r6c4 => - 6r6c3
Code: |
+--------------------+---------------------+-------------------+
| 13 7 2 | 36 1369 8 | 69 5 4 |
| 13 5 9 | 7 1346 46 | 26 8 12 |
| 6 4 8 | 2 19 5 | 3 7 19 |
+--------------------+---------------------+-------------------+
| 4 36 1 | 9 8 b26 | 7 c23 5 |
| 58 3689 356 | 1 26 7 | 289 4 2389 |
| 2 89 7 | 4 5 3 | 1 6 89 |
+--------------------+---------------------+-------------------+
| 78 1 4 | 38 237 9 | 5 d23 6 |
| 578 2 356 | 368 367 1 | 4 9 378 |
| 9 368 36 | 5 23467 a246 | 8-2 1 378-2|
+--------------------+---------------------+-------------------+
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Step 2: (2)r9c6 = r4c6 - r4c8 = (2)r7c8 => - 2r9c79; stte |
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dongrave
Joined: 06 Mar 2014 Posts: 568
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Posted: Tue Dec 01, 2020 5:18 pm Post subject: |
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Wow! Nice solutions! From looking at Gianni's and Clement's solutions I'm guessing that this must be a VH+ puzzle? |
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immpy
Joined: 06 May 2017 Posts: 571
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Posted: Tue Dec 01, 2020 5:55 pm Post subject: |
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Solution can be achieved with three XY-Wings, and then the Skyscraper on 2 as Gianni used to finish. That's why I left it as a VH rating. Chains can be bypassed.
cheers...immp |
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immpy
Joined: 06 May 2017 Posts: 571
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Posted: Tue Dec 01, 2020 6:05 pm Post subject: |
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First XY-Wing: 6/7/-4 in r4c1,r6c34=>r4c6<>4
Last edited by immpy on Wed Dec 02, 2020 5:19 pm; edited 3 times in total |
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immpy
Joined: 06 May 2017 Posts: 571
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Posted: Tue Dec 01, 2020 6:07 pm Post subject: |
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Second XY-Wing: 4/6/-2 in r36c4,r4c6=>r2c6<>2 |
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immpy
Joined: 06 May 2017 Posts: 571
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Posted: Tue Dec 01, 2020 6:10 pm Post subject: |
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Third XY-Wing: 4/6/-2 in r2c67,r3c4=>r2c5,r3c89<>2 |
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dongrave
Joined: 06 Mar 2014 Posts: 568
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Posted: Tue Dec 01, 2020 8:16 pm Post subject: |
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Ah, I see! Thanks for the info immpy! |
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