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RobertRattley
Joined: 24 Jun 2007
Posts: 118
Location: Australia
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 Posted: Fri Aug 03, 2012 3:51 am Post subject: Aug 3 VH |
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I thought once in my life I should start a topic. Being on the early end of the planet (Australia), I hope I'm not being TOO early for today's puzzle.
I found no less than 3 xyz wings. Just one of them was useful, with fulcrum 359. It eliminated a 3, setting up an xy wing 139. The xy wing pinched on 1 and led to the solution.
I'll let somebody else spell this out more fully.
Last edited by RobertRattley on Mon Aug 13, 2012 2:03 pm; edited 1 time in total |
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hughwill
Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK
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| Posted: Fri Aug 03, 2012 9:58 am Post subject: Aug 3 VH |
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| Code: |
+--------------+-----------------+-------------+
| 147 137 37 | 157 2 8 | 145 9 6 |
| 147 5 2 | 1379 6 1379 | 134 13 8 |
| 9 8 6 | 135 35 4 | 7 2 135 |
+--------------+-----------------+-------------+
| 5 9 4 | 13 8 6 | 13 7 2 |
| 27 27 1 | 4 39 5 | 8 6 39 |
| 3 6 8 | 1279 79 1279 | 159 15 4 |
+--------------+-----------------+-------------+
| 12 123 5 | 6 4 239 | 1239 8 7 |
| 8 1237 379 | 23579 3579 2379 | 6 4 139 |
| 6 4 379 | 8 1 2379 | 2359 35 359 |
+--------------+-----------------+-------------+
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Play this puzzle online at the Daily Sudoku site
Grid after basics. I also found the obvious 135 XY wing which removes a
couple of 3s in column 7 but leads to nothing.... |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Fri Aug 03, 2012 3:18 pm Post subject: |
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| Code: | *-----------*
|...|.28|.96|
|.52|.6.|..8|
|986|..4|72.|
|---+---+---|
|594|.86|.72|
|..1|4.5|86.|
|368|...|..4|
|---+---+---|
|..5|64.|.87|
|8..|...|64.|
|64.|81.|...|
*-----------*
*--------------------------------------------------------------------*
| 147 137 37 | 157 2 8 | 145 9 6 |
| 147 5 2 | 1379 6 1379 | 134 a13 8 |
| 9 8 6 | 135 35 4 | 7 2 d35-1 |
|----------------------+----------------------+----------------------|
| 5 9 4 | 13 8 6 | 13 7 2 |
| 27 27 1 | 4 39 5 | 8 6 39 |
| 3 6 8 | 1279 79 1279 | 159 15 4 |
|----------------------+----------------------+----------------------|
| 12 123 5 | 6 4 239 | 1239 8 7 |
| 8 1237 379 | 23579 3579 2379 | 6 4 139 |
| 6 4 379 | 8 1 2379 | 2359 b35 c359 |
*--------------------------------------------------------------------*
H2-wing
(1=3)r2c8-(3=5)r9c8-r9c9=5r3c9 => -1r3c9
either r2c8 is a 1 or r3c9 is a 5 r3c9 cannot be a 1 |
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