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immpy
Joined: 06 May 2017
Posts: 574
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 Posted: Sat Feb 26, 2022 6:26 pm Post subject: VH+ 022622 |
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Hello all, enjoy the puzzle.
| Code: |
+-------+-------+-------+
| . . . | . . . | . 5 . |
| 3 . . | 9 7 . | . . 1 |
| 5 . . | 2 . . | 3 . . |
+-------+-------+-------+
| . . . | . 6 . | . . . |
| . 3 . | . 5 2 | . 1 . |
| . . 2 | . . . | 4 6 . |
+-------+-------+-------+
| 9 . 3 | 4 . . | . . . |
| . 8 . | . 9 . | . . . |
| 7 . 5 | . . . | 6 2 . |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site
cheers...immp |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Sun Feb 27, 2022 11:26 am Post subject: |
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Nice puzzle Immp!
| Code: |
+------------+--------------+-------------+
| 4 129 89 | 6 138 138 | 278 5 278 |
| 3 26 68 | 9 7 5 | 28 4 1 |
| 5 17 178 | 2 4 18 | 3 9 6 |
+------------+--------------+-------------+
| 18 579 79 | 1378 6 4 | 25 78 235 |
| 6 3 4 | 78 5 2 | 9 1 78 |
| 18 57 2 | 1378 138 9 | 4 6 35 |
+------------+--------------+-------------+
| 9 16 3 | 4 2 67 | 1578 78 578 |
| 2 8 16 | 5 9 67 | 17 3 4 |
| 7 4 5 | 138 138 138 | 6 2 9 |
+------------+--------------+-------------+
|
Play this puzzle online at the Daily Sudoku site
If you say r4c7 is 2 then r2c7 = 8 and r2c3 = 6 and r8c3 = 1 and r8c7 = 7
If this were true there would be no digits left in <278> r1c7.
Therefore r4c7 < > 2 |
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Clement
Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
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| Posted: Thu Mar 03, 2022 6:46 pm Post subject: |
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[quote="Mogulmeister"]Nice puzzle Immp!
[code]
If you say r4c7 is 2 then r2c7 = 8 and r2c3 = 6 and r8c3 = 1 and r8c7 = 7
If this were true there would be no digits left in <278> r1c7.
Therefore r4c7 <2> - 2r4c7; stte |
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Clement
Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
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| Posted: Thu Mar 03, 2022 6:54 pm Post subject: |
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[quote="Clement"] | Mogulmeister wrote: | Nice puzzle Immp!
[code]
If you say r4c7 is 2 then r2c7 = 8 and r2c3 = 6 and r8c3 = 1 and r8c7 = 7
If this were true there would be no digits left in <278> r1c7.
Therefore r4c7 <2> - 2r4c7; stte |
Soory for that submission above, it is not that I intended. There is a probably a problem with the server or with my computer |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Fri Mar 04, 2022 1:35 pm Post subject: |
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| No probs Clement. I needed to add that this solved the puzzle. |
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dongrave
Joined: 06 Mar 2014
Posts: 572
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| Posted: Fri Mar 04, 2022 3:36 pm Post subject: |
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| Code: | +--------------+----------------+---------------+
| 4 129 89 | 6 138 138 | 278 5 278 |
| 3 26 68 | 9 7 5 | 28 4 1 |
| 5 17 178 | 2 4 18 | 3 9 6 |
+--------------+----------------+---------------+
| 18 579 79 | 1378 6 4 | 25 b78 235 |
| 6 3 4 |d78 5 2 | 9 1 c78 |
| 18 f57 2 |e1378 138 9 | 4 6 g35 |
+--------------+----------------+---------------+
| 9 16 3 | 4 2 67 | 1578 a78 h578 |
| 2 8 16 | 5 9 67 | 1-7 3 4 |
| 7 4 5 | 138 138 138 | 6 2 9 |
+--------------+----------------+---------------+ |
I used the chain: 7r7c8=r4c8-(7=8*)r5c9-(8=7)r5c4-r6c4=(7-5)r6c2=r6c9-(58*=7)r7c9 => r8c7 <> 7; stte. |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Fri Mar 04, 2022 8:00 pm Post subject: |
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Nice one Dongrave - it gave me a thought using your grid
There’s an ANP <578> at (a) and (h)
If true (5=78)r7c89 and r8c7 < > 7
If false (78=5)r7c89 then follow your chain in reverse (g to b) and r8c7 < > 7 |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Sat Mar 05, 2022 5:56 pm Post subject: |
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A further refinement and c,d and e from the original grid can be replaced
(78=5)r7c89-r6c9=r6c2-(5=79)r4c23-(7)r4c8=r7c8-r8c7 :stte
Last edited by Mogulmeister on Sat Mar 05, 2022 10:54 pm; edited 1 time in total |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Sat Mar 05, 2022 6:40 pm Post subject: |
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Relabel
| Code: | +--------------+----------------+---------------+
| 4 129 89 | 6 138 138 | 278 5 278 |
| 3 26 68 | 9 7 5 | 28 4 1 |
| 5 17 178 | 2 4 18 | 3 9 6 |
+--------------+----------------+---------------+
| 18 d579 d79 | 1378 6 4 | 25 e78 235 |
| 6 3 4 | 78 5 2 | 9 1 78 |
| 18 c57 2 | 1378 138 9 | 4 6 b35 |
+--------------+----------------+---------------+
| 9 16 3 | 4 2 67 | 1578 f78 a578 |
| 2 8 16 | 5 9 67 | 1-7 3 4 |
| 7 4 5 | 138 138 138 | 6 2 9 |
+--------------+----------------+---------------+ |
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