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Puzzle 11/03/29: B Moderate

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue Mar 29, 2011 2:15 pm    Post subject: Puzzle 11/03/29: B Moderate Reply with quote
Code:
 +-----------------------+
 | 9 . . | 5 4 2 | . . . |
 | . 7 . | . . 3 | . . . |
 | . . 2 | 1 . 8 | 4 . . |
 |-------+-------+-------|
 | 2 . 5 | . 3 . | 8 4 9 |
 | 6 . . | 2 5 . | 1 . 7 |
 | 7 9 3 | . . 4 | 5 . . |
 |-------+-------+-------|
 | . . 7 | 3 2 1 | 9 . 4 |
 | . . . | 9 . . | . 1 . |
 | . . . | 4 6 . | 7 . . |
 +-----------------------+

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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Wed Mar 30, 2011 3:49 am    Post subject: Reply with quote
A two step solution using VH moves or a one step using the same the same cells but different approach.

Quote:
skyscraper (3)r8c17; r1c2,r3c9<>3
xy-wing (58-6) vertex (58)r2c8 and pseudocell (68)r96c8; r6c9<>6
or
axy-wing (58-6) vertex (58)r2c8 and pseudocell (68)r96c8 with fin (3)r3c9; r6c9<>6
If fin is true: (3)r3c9-r1c7=r8c7-r8c1=(3)r3c1-(3)r3c9; conflict r3c9<>3

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Mar 31, 2011 5:10 am    Post subject: Reply with quote
ERs; r3c9<>3, r1c2<>6
W-Wing (56); r2c8, r8c9<>5
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