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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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 Posted: Sun Apr 12, 2009 3:54 am Post subject: April 12 VH |
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One basic wing after basics.
Solution: X-wing <7>
Early Earl |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sun Apr 12, 2009 4:47 am Post subject: |
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| Code: |
+-------------+--------------+---------------+
| 3 4 69 | 19 8 5 | 7 16 2 |
| 5 7 69 | 1249 14 129 | 8 16 3 |
| 2 1 8 | 7 6 3 | 4 5 9 |
+-------------+--------------+---------------+
| 8 26 237 | 5 9 167 | 123 237 4 |
| 79 269 1 | 346 47 67 | 5 2378 78 |
| 4 5 37 | 13 2 8 | 139 379 6 |
+-------------+--------------+---------------+
| 1 289 27 | 2689 3 4 | 269 2789 5 |
| 6 2389 5 | 1289 17 1279 | 239 4 78 |
| 79 2389 4 | 2689 5 2679 | 2369 23789 1 |
+-------------+--------------+---------------+
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Play this puzzle online at the Daily Sudoku site
I'm a sucker for deadly patterns. To avoid the DP 16-19-69 in boxes 123, r2c4 must be = 2 or 4. A few cells are forced with either number and they solve the puzzle. |
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smegly
Joined: 19 Oct 2008
Posts: 4
Location: Texas
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| Posted: Sun Apr 12, 2009 7:23 am Post subject: |
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Check out the bivalue pairs containing 7's in columns 1, 5 and 9. Was able to use the skycraper logic to eliminate two 7's in row 9, which made an otherwise difficult puzzle a LOT easier.
Don't see any wings, but maybe I only reduced the puzzle as far as the last poster?
smegly |
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cgordon
Joined: 04 May 2007
Posts: 769
Location: ontario, canada
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| Posted: Sun Apr 12, 2009 1:06 pm Post subject: |
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| Uncommonly cluttered after basics - but a simple x wing on 7 does it in. |
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Florida Bob
Joined: 25 Jul 2007
Posts: 12
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| Posted: Sun Apr 12, 2009 2:45 pm Post subject: |
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| I can't find the wing on 7. Can you be more specific? |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Sun Apr 12, 2009 2:53 pm Post subject: |
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| Florida Bob wrote: | | I can't find the wing on 7. Can you be more specific? |
C59
Keith |
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sdq_pete
Joined: 30 Apr 2007
Posts: 119
Location: Rotterdam, NL
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| Posted: Sun Apr 12, 2009 4:53 pm Post subject: |
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Or Rows 6 and 7
Peter |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sun Apr 12, 2009 8:26 pm Post subject: |
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A Kraken x-wing on <7> in r46c38 with fin in r4c6 deletes <7> in r7c3 & r59c8 for a one step solution also.
Ted |
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Louise56
Joined: 21 Sep 2005
Posts: 94
Location: El Cajon, California USA
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| Posted: Mon Apr 13, 2009 1:06 am Post subject: |
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| I came across 2 x-wings of 7's. The first was at r5c59 and r8c59. The second was at r6c38 and r7c38. |
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