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Puzzle 10/06/09: (A)

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Wed Jun 09, 2010 3:05 pm    Post subject: Puzzle 10/06/09: (A) Reply with quote
Code:
 +-----------------------+
 | 2 7 . | . 5 . | 3 . . |
 | 5 . 1 | 8 . . | . . . |
 | . 4 6 | . . . | 1 . . |
 |-------+-------+-------|
 | . 5 . | 2 . 4 | 9 . 1 |
 | 4 . . | . 7 . | . . . |
 | . . . | 1 . 3 | . . 5 |
 |-------+-------+-------|
 | 7 . 4 | 5 . . | . . 3 |
 | . . . | . . . | . . 4 |
 | . . . | 7 . 2 | 5 9 . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site

Code:
 after basics
 +--------------------------------------------------------------+
 |  2     7     89    |  4     5     1     |  3     68    689   |
 |  5     39    1     |  8     369   679   |  24    24    79    |
 |  389   4     6     |  39    2     79    |  1     5     789   |
 |--------------------+--------------------+--------------------|
 |  368   5     7     |  2     68    4     |  9     368   1     |
 |  4     1     389   |  69    7     5     |  68    368   2     |
 |  689   689   2     |  1     689   3     |  47    47    5     |
 |--------------------+--------------------+--------------------|
 |  7     2689  4     |  5     169   689   |  268   12    3     |
 |  689   2689  5     |  369   1369  689   |  2678  127   4     |
 |  1     368   38    |  7     4     2     |  5     9     68    |
 +--------------------------------------------------------------+
 # 68 eliminations remain
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Wed Jun 09, 2010 7:51 pm    Post subject: Reply with quote
Three fun steps.............

Quote:
Type 6 UR 79 r23c69 with x-wing 7 overlay; r2c6, r3c9<>7
xy-wing -389 with vertex 89 ric3; r9c2<>3
Flightless xy-wing 6-89 r5c4 plus transport: (8)r4c5 - r4c8 = (8)r1c8; r1c3<>8

Ted
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Wed Jun 09, 2010 9:56 pm    Post subject: Reply with quote
Two steps - again xy stuff...
Quote:
xy-wing(389) r1c3; r9c2<>3
xy-chain (8=9)r1c3-(9=8)r5c3-(8=6)r5c7-(6=8)r4c8; r1c8<>8
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Jun 10, 2010 1:05 am    Post subject: Reply with quote
Two and one-half steps?

XY-Wing (893)
Skyscraper (8)
Extend above for another elimination
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