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Puzzle 11/06/30: ~ Advanced

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Thu Jun 30, 2011 4:08 pm    Post subject: Puzzle 11/06/30: ~ Advanced Reply with quote
Code:
 +-----------------------+
 | 8 1 4 | 5 . . | 2 . 9 |
 | 5 6 . | . 2 . | 3 . . |
 | 3 . 9 | . . . | . 5 4 |
 |-------+-------+-------|
 | 2 . . | 3 . 5 | . . . |
 | . 4 . | . 9 1 | . . 2 |
 | . . . | 2 4 . | . . 5 |
 |-------+-------+-------|
 | 9 3 . | . . . | . . . |
 | . . 2 | . . . | . 1 . |
 | 6 . 1 | . 3 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: Sat Jul 02, 2011 3:55 am    Post subject: Reply with quote
A nice puzzle..........

Quote:
xy-wing 78-6( vertex r4c5; r3c4<>6
plus transport: (6)r1c5-r1c8=r6c8; r6c6<>6

BUG+3 forces r7c7<>7=5

Ted
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Sat Jul 02, 2011 7:40 am    Post subject: Reply with quote
Similar to Ted but UR instead of BUG...
Quote:
w-wing(67) (7=6)r1c5 - r1c8=r6c8 - (6=7)r6c6 ; r4c5<>7, r3c6<>7
(7=6)r1c5 - (6=5)r8c5 - ur(17)r37c45[(5)r7c5=qnp(68)r3c56] - (6=7)r3c7 ; r1c8<>7
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sat Jul 02, 2011 11:59 am    Post subject: Reply with quote
Peter: I would have seen your chain in terms of a common UR Type ...

Quote:
(7=6)r1c5 - (6=5)r8c5 - (5)r7c5=ur3(17)r37c45 - (6=7)r3c7 ; r1c8<>7 .
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Mon Jul 04, 2011 4:55 am    Post subject: Reply with quote
XY-Wing Chain (78-67-67-67-68); r4c9, r5c4<>8
Skyscraper; r3c4, r7c5<>7
BUG+1
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