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Puzzle 11/01/24 BBDB + hard

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue Jan 25, 2011 2:00 am    Post subject: Puzzle 11/01/24 BBDB + hard Reply with quote
Code:
 +-----------------------+
 | . . . | . 2 7 | . 6 . |
 | . 8 6 | . . 4 | 5 . 7 |
 | . 1 9 | . . . | . 2 4 |
 |-------+-------+-------|
 | . . . | 5 . . | . 7 . |
 | 4 . . | . 1 . | . . . |
 | 9 2 . | . . 6 | . 5 . |
 |-------+-------+-------|
 | . 5 . | . . . | 2 4 . |
 | 6 . 4 | 2 . 1 | 7 . . |
 | . 9 2 | . . . | . . 6 |
 +-----------------------+

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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Tue Jan 25, 2011 5:46 am    Post subject: Reply with quote
I played seven moves, making -0- attempts to economize. A UR, two colorings, an M-Wing and three XY-Wings.
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue Jan 25, 2011 6:17 am    Post subject: Reply with quote
Congratulations on surviving all of the basics and advanced moves !!!
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Wed Jan 26, 2011 7:07 pm    Post subject: Reply with quote
Three steps - all attacking 8s
Quote:
sashimi x-wing(8) r468c5, r58c8 ; r5c46<>8
kite(8) with transport ; (8)r3c7=r3c6 - r1c4=r7c4 - r7c1=r9c1 ; r9c7<>8
xy-wing(19-8) r1c9 ; r7c4<>8
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