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Puzzle 10/08/19: A

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Thu Aug 19, 2010 7:23 am    Post subject: Puzzle 10/08/19: A Reply with quote

Code:
 +-----------------------+
 | . . 8 | 5 . 4 | 1 . . |
 | 3 . 1 | . 9 . | . . 2 |
 | . 5 . | . 6 . | 9 . . |
 |-------+-------+-------|
 | 9 . . | 8 . . | . . . |
 | . 8 2 | . . . | . . . |
 | 5 7 . | . . 6 | . . 8 |
 |-------+-------+-------|
 | . . 5 | . . . | 6 . . |
 | . 2 9 | . . . | . . . |
 | . 6 . | . . 7 | . . 1 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium

PostPosted: Thu Aug 19, 2010 12:07 pm    Post subject: Reply with quote

Quote:
X Wing : (5)C69/R48 : r48c58<>5
3-SIS AIC : (21)R4C8 (15)R5C8 5B5 : r4c6<>2
3-SIS AIC : (34)R5C4 (41)R5C1 (13)R4C2 : r4c56<>3
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK

PostPosted: Thu Aug 19, 2010 1:10 pm    Post subject: Reply with quote

Three VH steps..
Quote:
x-wing(5) ; r48c58<>5
xy-wing(14-3) r5c1 ; r4c56<>3
xy-wing(12-5) r4c8 ; r4c9<>5, r5c5<>5

Pretty much same as JC (I think!)
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Thu Aug 19, 2010 11:33 pm    Post subject: Reply with quote

Very similar to prior to posts..........

Quote:
xy-wing 1-34 vertex (14)r5c1; r4c56<>3
x-wing (5)r59c58; r4c58,r8c58<>5
xy-wing 12-5 vertex (12)r4c8; r5c5<>5

Ted
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Fri Aug 20, 2010 12:47 am    Post subject: Reply with quote

tlanglet wrote:
Very similar to prior to posts..........

Yes. Unfortunately, there are only four non-basic techniques for VH ... and the distribution of these techniques is not uniform in the puzzles I generate. On top of that, I try to limit posted puzzles to just 3-4 VH steps, which limits my options further. Suggestions anyone?
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Fri Aug 20, 2010 2:19 am    Post subject: Reply with quote

Danny,

I never look at any posted results until after I complete the puzzle, so I am just fine the way things are presently.

Ted
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK

PostPosted: Fri Aug 20, 2010 7:58 am    Post subject: Reply with quote

daj95376 wrote:
Suggestions anyone?

When I first came to this forum earlier this year I progressed from the VH on the main page to your VH puzzles and they were clearly much better and a great step up. Even though there are only four techniques they are much better mixed than the main VH puzzle which "always" is a single xy-wing. I think you're doing a good job!
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