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Puzzle 10/01/05 (B)

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue Jan 05, 2010 9:58 am    Post subject: Puzzle 10/01/05 (B) Reply with quote
Code:
 +-----------------------+
 | . . . | 1 5 . | . . . |
 | . 4 . | . . . | . . . |
 | . . 5 | 3 4 6 | . . . |
 |-------+-------+-------|
 | 4 . 8 | . . 1 | 6 . . |
 | 5 . 7 | . 6 . | 3 . . |
 | . . 3 | 9 . . | 7 . 1 |
 |-------+-------+-------|
 | . . . | 4 1 9 | 8 5 3 |
 | . . . | . . . | 1 . . |
 | . . . | . . 3 | 4 . 7 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Tue Jan 05, 2010 2:36 pm    Post subject: Reply with quote
One step again:
Quote:
(2=7)r1c6-(7=3)r1c8-(3=8)r1c2-(8=5)r9c2-(5=6)r9c4-(6=9)r9c8-(9=1)r9c3-(1=2)r2c3
=> r1c13,r2c6<>2
I'm on a roll! Shocked
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Tue Jan 05, 2010 2:49 pm    Post subject: Reply with quote
I spotted several useless moves but then I found a one stepper.

Quote:
xy-chain: (3=8)r1c2 - (8=5)r9c2 - (5=3)r8c2 - (3=9)r8c1 - (9=1)r9c3 - (1=2)r2c3 - (2=7)r2c6 - (7=3)r2c8; r1c8|r2c1<>3.

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Wed Jan 06, 2010 5:26 am    Post subject: Reply with quote
Five steps.

XY (271)
X (7)
W (26)
DP (26-27-67)
XY (129)
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