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Puzzle 10/06/03: (A)

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Fri Jun 04, 2010 12:43 am    Post subject: Puzzle 10/06/03: (A) Reply with quote

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

Play this puzzle online at the Daily Sudoku site
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Fri Jun 04, 2010 3:06 am    Post subject: Reply with quote

Three steps.........

Quote:
xy-wing 1-56 with vertex 16 in r9c5; r8c23,r9c6<>5
xy-wing -156 with vertex 56 in r3c2; r8c7<>1 plus transport: (1)r3c7 - r9c7 = (1)r9c56; r8c46<>1
AUR58 r26c89 with x-wing 8 overlapping; r2c89<>5,

Ted
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK

PostPosted: Fri Jun 04, 2010 8:33 am    Post subject: Reply with quote

Two moves starting with an xy-chain to clear the head from all the discussions on single digit turbot fish..

Quote:
xy-chain (1=5)r7c9-(5=18)r89c7-(1=5)r3c7-(5=6)r3c2-(6=5)r2c1-(5=6)r9c1-(6=1)r9c5; r7c6<>1, r9c7<>1
w-wing(15) (5=1)r3c7-r8c7=r8c2-(1=5)r5c2; r3c2<>5 (or many turbot fish moves on 5s if preferred)
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