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crunched
Joined: 05 Feb 2008
Posts: 168
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 Posted: Tue Aug 11, 2009 5:11 am Post subject: Aug 11 VH |
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hint
A 36 w-wing solved this one
Basics up to this point locates a wing-span.
| Code: |
+--------------+---------------+----------------+
| 256 1 5678 | 9 2567 3 | 256 4 268 |
| 2569 78 5678 | 257 4 56 | 2356 368 1 |
| 256 3 4 | 125 1256 8 | 7 9 26 |
+--------------+---------------+----------------+
| 8 4 239 | 1235 12569 7 | 1369 36 369 |
| 7 5 39 | 13 169 16 | 8 2 4 |
| 1 6 239 | 8 29 4 | 39 37 5 |
+--------------+---------------+----------------+
| 36 2 1 | 4 78 9 | 36 5 78 |
| 4 78 5678 | 157 3 15 | 269 678 26789 |
| 35 9 578 | 6 578 2 | 4 1 378 |
+--------------+---------------+----------------+
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Play this puzzle online at the Daily Sudoku site |
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tippwell
Joined: 19 Sep 2007
Posts: 9
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| Posted: Tue Aug 11, 2009 7:51 am Post subject: |
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| I took the basics a bit further - only the one 9 in box 1 and only the one 7 in box 6. Then the w-wing. |
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tippwell
Joined: 19 Sep 2007
Posts: 9
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| Posted: Tue Aug 11, 2009 7:53 am Post subject: |
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| and forgot to mention the 29 in box 9. |
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sdq_pete
Joined: 30 Apr 2007
Posts: 119
Location: Rotterdam, NL
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| Posted: Tue Aug 11, 2009 12:34 pm Post subject: |
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| There's a column X-wing on 8, though it doesn't help much. For the rest, I too could only see the W-wing. |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Tue Aug 11, 2009 12:52 pm Post subject: |
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| sdq_pete wrote: | | There's a column X-wing on 8, though it doesn't help much. For the rest, I too could only see the W-wing. |
There is an x-wing 7 that along with the x-wing 8 will solve it. I like the w-wing solution best. |
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iiggoorr
Joined: 06 Aug 2009
Posts: 4
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| Posted: Tue Aug 11, 2009 1:06 pm Post subject: |
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After the basics there is a X wing on 1 in r5c4 r5c6 r8c4 r8c6 which eliminates 1 from r3c4.
After X wing there is X-Y wing on 25 26 56 with pivot in r3c4 xx eliminates
6 from r2c7 and rac8.
after that there is another X-Y wing on 68 36 38 with pivot in r8c8 xx eliminates 3 from r2c7.
that last X-Y wing creates naked triples in box 3 which solves the puzzle |
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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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| Posted: Tue Aug 11, 2009 1:48 pm Post subject: aug 11 |
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Two x-wings (7, 8) did it for me. I could not find a single bullet. Norm?
Earl |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Tue Aug 11, 2009 3:58 pm Post subject: |
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I played the Hidden UR on 78 before getting to the W-Wing.
| Quote: | | I could not find a single bullet. |
See Crunched's thread opener. |
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