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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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 Posted: Sat May 09, 2009 2:09 am Post subject: May 9 VH |
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Old reliable does it again, with a choice!
Solution: Either of two apparent xy-wings, (169) or (568), will do it.
Early Earl |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sat May 09, 2009 5:12 am Post subject: |
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| I never looked for wings. There was a potential DP in boxes 789 with only one way to kill it and that was all that was needed. |
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crunched
Joined: 05 Feb 2008
Posts: 168
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| Posted: Sat May 09, 2009 6:12 am Post subject: Re: May 9 VH |
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| Earl wrote: | Old reliable does it again, with a choice!
Solution: Either of two apparent xy-wings, (169) or (568), will do it.
Early Earl |
Here is my grid after basics.
A 6-wing from columns 4,8 removes a 6 in col 6. But that proved no help for me.
The 16-69-19 (169) xy wing did it. I don't see a 568 xy wing???
| Code: |
+------------+--------------+--------+
| 2 68 4 | 7 568 56 | 9 3 1 |
| 1 89 5 | 4 289 3 | 6 28 7 |
| 3 7 689 | 1 2689 26 | 4 28 5 |
+------------+--------------+--------+
| 7 289 89 | 25 4 1 | 3 59 6 |
| 4 16 3 | 9 56 8 | 7 15 2 |
| 5 1269 69 | 3 26 7 | 8 19 4 |
+------------+--------------+--------+
| 9 45 7 | 256 3 256 | 1 46 8 |
| 6 3 2 | 8 1 4 | 5 7 9 |
| 8 45 1 | 56 7 9 | 2 46 3 |
+------------+--------------+--------+
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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: Sat May 09, 2009 9:05 am Post subject: |
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Crunched
Taking out that 6 means that the sixes in col 5 in box 2 disappear, and the remaining 58 in row 1 col 5 can find the other 2 components easy enough |
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gindaani
Joined: 06 Mar 2009
Posts: 79
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| Posted: Sat May 09, 2009 7:13 pm Post subject: Re: May 9 VH |
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| crunched wrote: |
Here is my grid after basics.
A 6-wing from columns 4,8 removes a 6 in col 6. But that proved no help for me.
The 16-69-19 (169) xy wing did it. I don't see a 568 xy wing???
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In box 5, <6> can only be con column 5. This eliminates <6> from r13c5, and the 586 xy-wing becomes apparent. |
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tippwell
Joined: 19 Sep 2007
Posts: 9
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| Posted: Sat May 09, 2009 9:49 pm Post subject: |
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| So i didn't even need the x wing. (In theory!) |
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crunched
Joined: 05 Feb 2008
Posts: 168
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| Posted: Sun May 10, 2009 10:43 am Post subject: |
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| tippwell wrote: | | So i didn't even need the x wing. (In theory!) |
Thanks for pointing out finding the other xy wing. Nope, no x-wing needed as it turns out. As the saying goes, more than one way to skin a cat...even if I don't know anybody who skins cats. |
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