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immpy
Joined: 06 May 2017
Posts: 574
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 Posted: Mon Jul 05, 2021 8:50 pm Post subject: VH+ 070521 |
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Hello all, enjoy the puzzle...
| Code: |
+-------+-------+-------+
| 9 . 2 | . 4 . | . . . |
| 6 5 8 | . 3 . | . . 4 |
| . 3 7 | . . 2 | . . 5 |
+-------+-------+-------+
| . . 4 | 3 . . | 8 5 . |
| . 9 . | . . . | . 4 . |
| . . . | 4 . . | 3 9 . |
+-------+-------+-------+
| . 4 1 | . . 9 | . . 8 |
| 3 7 . | . 8 . | . . 1 |
| 8 2 6 | . 5 . | . . . |
+-------+-------+-------+
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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: Tue Jul 06, 2021 1:30 am Post subject: |
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I probably made this harder than it should be and eventually had to do it with a chain.
| Code: | +--------------+---------------+--------------+
| 9 1 2 | 5678 4 58 | 67 68 3 |
| 6 5 8 | 79 3 17 | e279 d12 4 |
| 4 3 7 | 689 b16 2 | 69 c168 5 |
+--------------+---------------+--------------+
| 127 6 4 | 3 9 17 | 8 5 27 |
| 27 9 3 | 58 27 58 | 1 4 6 |
| 127 8 5 | 4 127 6 | 3 9 27 |
+--------------+---------------+--------------+
| 5 4 1 | 267 a67 9 | f26 3 8 |
| 3 7 9 | h26 8 4 | 5 g26 1 |
| 8 2 6 | 1 5 3 | 4 7 9 |
+--------------+---------------+--------------+ |
If you plug 6 into r7c5 in the chain below another 6 arrives in the same box in r8c4 so r7c5<> 6
(6)r7c5-(6=1)r3c5-r3c8=(1-2)r2c8=r2c7-(2=6)r7c7-r8c8=(6)r8c4 |
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Clement
Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
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| Posted: Tue Jul 06, 2021 7:22 am Post subject: VH+070521 |
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| Code: |
+-----------------+---------------------+--------------------+
| 9 1 2 | 5678 4 58 | 67 68 3 |
| 6 5 8 | 79 3 c17 | 279 b12 4 |
| 4 3 7 | 689 16 2 | 69 168 5 |
+-----------------+---------------------+--------------------+
| 127 6 4 | 3 9 d17 | 8 5 27 |
| 27 9 3 | 58 e27 58 | 1 4 6 |
| 127 8 5 | 4 e127 6 | 3 9 27 |
+-----------------+---------------------+--------------------+
| 5 4 1 | 267 e67 9 | 2-6 3 8 |
| 3 7 9 | 2-6 8 4 | 5 a26 1 |
| 8 2 6 | 1 5 3 | 4 7 9 |
+-----------------+---------------------+--------------------+
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(6=2)r8c8 (2=1)r2c8 r2c6 = r4c6 (1=6)r567c5 => - 2r8c4,r7c7; stte |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Tue Jul 06, 2021 11:09 am Post subject: Re: VH+070521 |
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| Clement wrote: |
(6=2)r8c8 (2=1)r2c8 r2c6 = r4c6 (1=6)r567c5 => - 2r8c4,r7c7; stte |
Hi Clement - nice one. Dont you mean -6r8c4,r7c7 ? |
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dongrave
Joined: 06 Mar 2014
Posts: 572
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| Posted: Tue Jul 06, 2021 1:57 pm Post subject: |
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| My chain was similar to the others. 6r7c7 = r8c8 - (6=8)r1c8 - (68=1)r3c8 - (1=6)r3c5 => r7c5 <> 6; stte. |
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immpy
Joined: 06 May 2017
Posts: 574
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| Posted: Tue Jul 06, 2021 5:30 pm Post subject: |
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There's a nice UR Type 1 on 58 in r15c46 which means r1c4<>5,8. A good rinse reveals either a Skyscraper on 6 or a Finned X-wing on 6, which can take you to the end. But that is more steps than many of you needed.
cheers...immp |
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