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Puzzle 11/05/10: ~ XY/Extreme (BBDB !!!)

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue May 10, 2011 3:44 pm    Post subject: Puzzle 11/05/10: ~ XY/Extreme (BBDB !!!) Reply with quote
This puzzle is far from "friendly" !!!

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

Play this puzzle online at the Daily Sudoku site
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Wed May 11, 2011 8:02 am    Post subject: Reply with quote
Three steps...
Lots of possible moves through this one, move #2 is another example of finding a simple pattern and then looking for more interesting transport (it could probably be combined with #1 also) ...
Quote:
x-wing(6) r3, r5 ; r16c1<>6, r46c4<>6
kite(7) with chain transport ; kite(7)[r7c8=r4c8-r5c9=r5c4] - (6)r5c4=r3c4 - (6=1)r1c6 - (1=7)r8c6 ; r7c46<>7, r8c7<>7
w-wing(14) (4=1)r7c1 - r3c1=r3c4 - (1=4)r6c4 ; r7c4<>4
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu May 12, 2011 1:21 am    Post subject: Reply with quote
Multi-coloring; r4c48<>6
W-Wing (14); r6c1<>1
Coloring; r6c1<>4
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Fri May 13, 2011 8:48 am    Post subject: Reply with quote
a walkthrough

http://youtu.be/HKNW3Zh3vmU
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