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Puzzle 10/04/22 (C)

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Thu Apr 22, 2010 6:25 am    Post subject: Puzzle 10/04/22 (C) Reply with quote
Numerous basic steps that probably shouldn't be ignored.

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

Play this puzzle online at the Daily Sudoku site

Hint wrote:
XYZ-Wing possible.


===== ===== ===== ===== =====

For a fiery version of this puzzle, let's remove r1c1=6 as a given.

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

Play this puzzle online at the Daily Sudoku site
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Thu Apr 22, 2010 7:50 am    Post subject: Reply with quote
Non-firey version...

Quote:
xyz-wing(458); r89c6<>5 (No hint! - though I did do an inessential xy-wing first)
Multi-colour Wrap(6) or Kite(6) with pincer transport r6c6=r5c6; r5c2<>6, (r6c6<>6)


Now for firey.... though have to go to work
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Thu Apr 22, 2010 2:20 pm    Post subject: Reply with quote
An extinquisher for fiery puzzles:
Quote:
(8)r1c3=r3c2-(8=4)r3c4-(4=8)ALS:r1c15=(8)r1c3; r1c3=8
followed by the non=fiery solution xyz-wing 458 and skyscraper 6
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Thu Apr 22, 2010 4:01 pm    Post subject: Reply with quote
A different extinguisher...

Quote:
Just learning these, but I believe this is what you call..
ALS-XZ (1548)r3c124, (45)r1c5, 4 restricted common; r1c13<>5
Though I saw it as a "xy-wing" with pivot 48, pincer 45 and second pincer make a locked pair of (15)....
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Fri Apr 23, 2010 3:11 pm    Post subject: Reply with quote
Three XY-Wing (458, 458, 165). I'm not sure now if those first two were both 458, but that what my notes say.
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