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Puzzle 10/06/06: (B) BBDB

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sun Jun 06, 2010 2:40 pm    Post subject: Puzzle 10/06/06: (B) BBDB Reply with quote
Code:
 +-----------------------+
 | 1 . . | . . 4 | 5 7 8 |
 | . . . | . . . | . . 2 |
 | . . 4 | 5 . . | 6 . . |
 |-------+-------+-------|
 | . . 5 | 8 . . | . . 6 |
 | . . . | . 5 . | 2 . . |
 | 6 . . | . . 1 | . . 4 |
 |-------+-------+-------|
 | 7 . 1 | . 9 . | . 8 . |
 | 8 . . | . . . | 7 . . |
 | 9 4 . | 2 . 7 | . . . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site

after basics:

Code:
 +-----------------------------------------------------------------------+
 |  1      369    29     |  39     236    4      |  5      7      8      |
 |  5      36789  789    |  1379   1367   89     |  39     4      2      |
 |  23     3789   4      |  5      237    289    |  6      39     1      |
 |-----------------------+-----------------------+-----------------------|
 |  234    1379   5      |  8      2347   29     |  39     139    6      |
 |  34     1389   89     |  349    5      6      |  2      139    7      |
 |  6      379    279    |  379    237    1      |  8      5      4      |
 |-----------------------+-----------------------+-----------------------|
 |  7      2      1      |  6      9      5      |  4      8      3      |
 |  8      5      6      |  14     14     3      |  7      2      9      |
 |  9      4      3      |  2      8      7      |  1      6      5      |
 +-----------------------------------------------------------------------+
 # 60 eliminations remain
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sun Jun 06, 2010 6:36 pm    Post subject: Reply with quote
A BBDB one-stepper Exclamation Shocked
Quote:
Extended XY-wing 29-39-39-39-23 takes out 2 in R4C1, R3C6.
Keith
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sun Jun 06, 2010 7:00 pm    Post subject: Reply with quote
keith wrote:
A BBDB one-stepper Exclamation Shocked

I debated qualifying it as BBDB as VH+. I may do so in the future.

Bottom Line: Advanced will alway appear if necessary in my solver's solution.
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Sun Jun 06, 2010 8:32 pm    Post subject: Reply with quote
I started with a xy-wing 23-9, but my second move was identical to the xy-wing posted by Keith.

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Tue Jun 08, 2010 12:57 am    Post subject: Reply with quote
I missed that extended XY-Wing (which I usually call an XY-Wing Chain). I played an XY-Wing (293) + pincer transport, then a five-cell XY-Chain.
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