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Puzzle 10/03/30 (C)

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue Mar 30, 2010 3:32 pm    Post subject: Puzzle 10/03/30 (C) Reply with quote
Code:
 +-----------------------+
 | . . 8 | 6 . 2 | 5 . . |
 | . . . | . . 5 | 9 . . |
 | 3 . 4 | 9 7 . | . 6 2 |
 |-------+-------+-------|
 | 7 . 2 | . . . | . . . |
 | . . 5 | . 8 . | 7 . . |
 | 9 3 . | . . 7 | . . . |
 |-------+-------+-------|
 | 8 2 . | . 5 . | 4 9 . |
 | . . 7 | . . . | 3 . 8 |
 | . . 9 | . . . | . 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: Tue Mar 30, 2010 6:55 pm    Post subject: Reply with quote
Some nice colouring opened up by a UR...

Quote:
Type 1 UR (46); r9c2=1
Type 2 UR (34); r2c48<>1
Simple colour trap (1); r4c5<>1
Multi-colour wrap (1); excludes 1 from 4 cells


And so few naked subsets.
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Tue Mar 30, 2010 11:09 pm    Post subject: Reply with quote
Using VH+ techniques, I also had a four step solution.
Quote:
Type 1 UR 46, which opened up a
xy-wing -126, which opened up a
Kraken x-wing 1, which opened up another
Type 1 UR34 to complete the puzzle.

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Apr 01, 2010 7:38 pm    Post subject: Reply with quote
Couple of ERs and a W-Wing on 16. I was trying to avoid the URs, but couldn't. Type 1 on 46 and Type 2 on 34-1. Then using the latter to create a pincer situation finished it off.
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