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Puzzle 10/06/30: XY

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Wed Jun 30, 2010 3:58 am    Post subject: Puzzle 10/06/30: XY Reply with quote
Code:
 +-----------------------+
 | . . . | . 8 2 | . . 3 |
 | . . . | . 1 4 | . . . |
 | . . . | 3 . . | . 7 8 |
 |-------+-------+-------|
 | . . 8 | . . . | . . 7 |
 | 7 . . | . 5 . | . 3 . |
 | 1 5 . | . . 9 | . . 4 |
 |-------+-------+-------|
 | . . . | . . . | . . . |
 | . . 4 | . . . | . 6 . |
 | 8 . 2 | 4 . 7 | . . 1 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site

Code:
 after basics
 +-----------------------------------------------------+
 |  49   79   567  |  579  8    2    |  469  1    3    |
 |  3    8    67   |  79   1    4    |  69   2    5    |
 |  249  129  15   |  3    69   56   |  49   7    8    |
 |-----------------+-----------------+-----------------|
 |  26   26   8    |  1    4    3    |  5    9    7    |
 |  7    4    9    |  2    5    8    |  1    3    6    |
 |  1    5    3    |  6    7    9    |  2    8    4    |
 |-----------------+-----------------+-----------------|
 |  569  137  17   |  589  23   156  |  78   4    29   |
 |  59   137  4    |  589  23   15   |  78   6    29   |
 |  8    69   2    |  4    69   7    |  3    5    1    |
 +-----------------------------------------------------+
 # 44 eliminations remain
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Wed Jun 30, 2010 7:35 am    Post subject: Reply with quote
This two stepper with no particular wing/chain moves - I probably missed it!
Quote:
type 6 UR(49); r1c7<>4, r3c1<>4
finned x-wing(9); r1c2<>9
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Wed Jun 30, 2010 6:18 pm    Post subject: Reply with quote
Peter: The XY rating includes a number of techniques. Your solution is valid.
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Jul 01, 2010 10:43 pm    Post subject: Reply with quote
Took me three moves.

XY-Wing (679)
XY-Wing (469), flightless, with pincer transport
Coloring (9)
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