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peter urhegyi
Joined: 26 Oct 2020 Posts: 28
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Posted: Wed Jul 12, 2023 7:15 pm Post subject: 12-07-2023-daily-VH |
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Code: |
+-------+-------+-------+
| . . 6 | . . . | 2 . . |
| . 2 . | 4 . 7 | . 3 . |
| 3 . . | . . . | . . 1 |
+-------+-------+-------+
| . 4 . | 7 . 2 | . 9 . |
| . . . | . . . | . . . |
| . 8 . | 6 . 5 | . 7 . |
+-------+-------+-------+
| 2 . . | . . . | . . 4 |
| . 7 . | 3 . 8 | . 5 . |
| . . 8 | . . . | 9 . . |
+-------+-------+-------+
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dongrave
Joined: 06 Mar 2014 Posts: 564
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Posted: Fri Jul 14, 2023 3:46 pm Post subject: |
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Thanks for the puzzle Peter!
After basics: Code: | +--------------+---------------+---------------+
| 7 9 6 | 15 135 13 | 2 4 8 |
| 8 2 1 | 4 6 7 | 5 3 9 |
| 3 5 4 | 28 28 9 | 7 6 1 |
+--------------+---------------+---------------+
| 156 4 3 | 7 e18 2 | d168 9 56 |
| 1569 16 7 | 18 349 34 | 1468 12 256 |
| 19 8 2 | 6 a4*9 5 | b14 7 3 |
+--------------+---------------+---------------+
| 2 16 5 | 9 7 16 | 3 8 4 |
| 14 7 9 | 3 f124 8 | c16 5 g26 |
| 146 3 8 | 125 1245 146 | 9 12 7 |
+--------------+---------------+---------------+ |
Since it was rated VH I first tried to solve it using just VH moves (i.e. X Wing, XY Wing, and XYZ Wing) with no luck so I ended up using the following chain instead: 4*r6c5-(4=1)r6c7-(1=6)r8c7-(16=8)r4c7-(8=1)r4c5-(14*=2)r8c5-(2=6)r8c9 contradiction (i.e. 6r8c79) => r6c5 <> 4; stte. |
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peter urhegyi
Joined: 26 Oct 2020 Posts: 28
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Posted: Sun Jul 16, 2023 7:00 am Post subject: Re: 12-07-2023-daily-VH |
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peter urhegyi wrote: | Code: |
+-------+-------+-------+
| . . 6 | . . . | 2 . . |
| . 2 . | 4 . 7 | . 3 . |
| 3 . . | . . . | . . 1 |
+-------+-------+-------+
| . 4 . | 7 . 2 | . 9 . |
| . . . | . . . | . . . |
| . 8 . | 6 . 5 | . 7 . |
+-------+-------+-------+
| 2 . . | . . . | . . 4 |
| . 7 . | 3 . 8 | . 5 . |
| . . 8 | . . . | 9 . . |
+-------+-------+-------+
| Needs swordfish and several xy-wings |
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