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Puzzle 10/06/09: (C) Advanced

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Wed Jun 09, 2010 3:06 pm    Post subject: Puzzle 10/06/09: (C) Advanced Reply with quote
Code:
 +-----------------------+
 | . . 7 | . . 3 | 8 . 5 |
 | . 1 . | . 7 6 | . . . |
 | 5 . 3 | . . . | . 6 . |
 |-------+-------+-------|
 | . . . | 9 . 8 | . . . |
 | . 4 . | . 5 . | . . . |
 | 9 8 . | 7 . 1 | . 4 3 |
 |-------+-------+-------|
 | 6 . . | . . . | 1 . . |
 | . . 8 | . . 7 | . 5 4 |
 | 3 . . | . . 9 | . 7 . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site

Code:
 after basics
 +-----------------------------------------------------------------------+
 |  4      6      7      |  12     129    3      |  8      19     5      |
 |  8      1      9      |  5      7      6      |  4      3      2      |
 |  5      2      3      |  18     189    4      |  79     6      179    |
 |-----------------------+-----------------------+-----------------------|
 |  127    3      1256   |  9      4      8      |  2567   12     167    |
 |  17     4      16     |  3      5      2      |  679    189    16789  |
 |  9      8      25     |  7      6      1      |  25     4      3      |
 |-----------------------+-----------------------+-----------------------|
 |  6      7      24     |  248    3      5      |  1      289    89     |
 |  12     9      8      |  6      12     7      |  3      5      4      |
 |  3      5      124    |  1248   128    9      |  26     7      68     |
 +-----------------------------------------------------------------------+
 # 50 eliminations remain
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Wed Jun 09, 2010 7:23 pm    Post subject: Reply with quote
Two steps, but the first was a lucky find while checking out a potential AXY-wing.............

Quote:
(2)r4c1 - (2=1)r4c8 - r1c8 = r3c9 - (1=8)r3c4 - r79c4 = r9c5 - (8=6)r9c9 - (6=2)r9c7 - r6c7 = (2)r6c3; r4c1<>2
ANP(89=2)r7c89 - (2=1)r4c8 - (1=9)r1c8 - (9=2)r1c5 - (2=8)r9c5; r9c9<>8

Ted
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Wed Jun 09, 2010 9:20 pm    Post subject: Reply with quote
One stepper - an xy-chain with pairs in it...
Quote:
xy-chain (8=12)r89c5-(12=9)r1c5-(9=1)r1c8-(1=2)r4c8-(2=89)r7c89; r9c9<>8

(Edit) Similar to Ted's last step but found it backwards and had another ANP at the end. Honest I didn't look!
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Jun 10, 2010 10:20 pm    Post subject: Reply with quote
ER (2) and XY-Wing (192), flightless with pincer transport.
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Thu Jun 10, 2010 10:34 pm    Post subject: Reply with quote
This puzzle should be rated: XY !!!
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