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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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 Posted: Tue Feb 17, 2009 4:48 am Post subject: Feb. 17 VH |
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Surprised that nobody had started a thread by this time. I used two moves that are not part of the puzzle requirements.
| Quote: | | Type 1 UR on 69 and W-Wing on 19 |
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crunched
Joined: 05 Feb 2008
Posts: 168
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| Posted: Tue Feb 17, 2009 8:24 am Post subject: |
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I kind of lost track of how I got to this point, but I think it was just basics to get here.
There is a 1-3-5 xyz wing although I don't think that does much good.
A 1-7-9 xy wing cracked it for me.
| Code: |
+--------------+------------+---------+
| 9 4 2 | 7 6 1 | 8 5 3 |
| 7 6 3 | 45 48 58 | 2 9 1 |
| 15 8 15 | 2 9 3 | 6 4 7 |
+--------------+------------+---------+
| 46 7 49 | 8 35 2 | 35 1 69 |
| 135 13 8 | 9 135 6 | 4 7 2 |
| 1356 2 159 | 15 7 4 | 35 8 69 |
+--------------+------------+---------+
| 8 5 17 | 3 2 79 | 19 6 4 |
| 2 19 6 | 14 48 89 | 7 3 5 |
| 134 139 147 | 6 15 579 | 19 2 8 |
+--------------+------------+---------+
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Play this puzzle online at the Daily Sudoku site |
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George Woods
Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK
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| Posted: Tue Feb 17, 2009 8:54 am Post subject: or a W-wing |
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Having missed the exclusion of 9s in the 3rd col of box 7 there was no XY wing for me so I used the 19 W- wing in boxes 7 and 9 operating on the 1s in row7 to solve it via pretty much the same next couple of moves as the XY wing leads to!
Last edited by George Woods on Wed Feb 18, 2009 12:23 pm; edited 1 time in total |
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sdq_pete
Joined: 30 Apr 2007
Posts: 119
Location: Rotterdam, NL
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| Posted: Tue Feb 17, 2009 10:55 am Post subject: |
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A very quick one, with XY 179 (R7C3)
Peter |
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DennyOR
Joined: 12 Sep 2007
Posts: 33
Location: Portland, Oregon
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| Posted: Fri Feb 20, 2009 4:54 am Post subject: |
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Or the 1s chain that I saw before the 9s chain:
[91-(17-79]-98-84-41) |
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wapati
Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.
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| Posted: Fri Feb 20, 2009 6:04 am Post subject: |
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I like the sashimi x-wing.
| Code: | .------------------.------------------.------------------.
| 9 4 2 | 7 6 1 | 8 5 3 |
| 7 6 3 | 45 48 58 | 2 9 1 |
| 15 8 15 | 2 9 3 | 6 4 7 |
:------------------+------------------+------------------:
| 46 7 49 | 8 35 2 | 35 1 69 |
| 135 3-1 8 | 9 135 6 | 4 7 2 |
|#1356 2 #159 |#15 7 4 | 35 8 69 |
:------------------+------------------+------------------:
| 8 5 17 | 3 2 79 | 19 6 4 |
| 2 *19 6 |*14 48 89 | 7 3 5 |
| 134 139 147 | 6 15 579 | 19 2 8 |
'------------------'------------------'------------------' |
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