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Puzzle 10/02/03 (B)

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Wed Feb 03, 2010 5:14 pm    Post subject: Puzzle 10/02/03 (B) Reply with quote
Possible BBDB w/ XYZ-Wing kicker.

Code:
 +-----------------------+
 | 9 . 2 | . . . | . . . |
 | . 6 1 | . 5 2 | . 8 . |
 | 4 3 . | 9 . . | . 2 6 |
 |-------+-------+-------|
 | . . 8 | 1 . . | . . . |
 | . 9 . | . . 8 | . . 4 |
 | . 5 . | . 9 . | 8 . . |
 |-------+-------+-------|
 | . . . | . . 1 | 6 9 . |
 | . 4 6 | . . . | 7 1 . |
 | . . 9 | . 7 . | . . 8 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Thu Feb 04, 2010 5:18 am    Post subject: Reply with quote
xy-wing {2,6,7} removes 7 from r4c89

Code:
+-----------+-------------------+-------------------+
| 9    8  2 | 346    1    46    | 345     345  7    |
| 7    6  1 | 34     5    2     | 349     8    39   |
| 4    3  5 | 9      8    7     | 1       2    6    |
+-----------+-------------------+-------------------+
| 26   7  8 | 1      246  45    | 2359    356  2359 |
| 1    9  3 | 27(5)  26   8     | (25)    567  4    |
| 26   5  4 | 27     9    3     | 8       67   1    |
+-----------+-------------------+-------------------+
| 358  2  7 | 48(5)  34   1     | 6       9    35   |
| 358  4  6 | 28(5)  23   9     | 7       1    235  |
| 35   1  9 | (256)  7    -5(6) | 345(2)  345  8    |
+-----------+-------------------+-------------------+


(5)r789c4 = (5)r5c4 - (5=2)r5c7 - (2)r9c7 = (2-6)r9c4 - (6)r9c6; r9c6 <> 5
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Feb 04, 2010 5:58 am    Post subject: Reply with quote
It was a mini BBDB for me.

XY (276)
XY (267)
ERs (2,2,5)
Hidden UR (39), not a factor
Multi-coloring (2)
XYZ (256)
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Thu Feb 04, 2010 2:25 pm    Post subject: Reply with quote
I did not search for a xyz-wing but solved the puzzle in 5 moves.

xy-wing26-7,
xy-wing 2-67,
xy-wing 34-5 plus transport,
x-wing 2,
xy chain.

Ted
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