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Puzzle 10/02/24 (B)

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Wed Feb 24, 2010 11:28 pm    Post subject: Puzzle 10/02/24 (B) Reply with quote
Code:
 +-----------------------+
 | . . 9 | . 8 . | . . 6 |
 | . 5 . | 6 . . | . . 2 |
 | 6 . 4 | . . . | 8 . . |
 |-------+-------+-------|
 | . 1 . | . 3 4 | . 8 . |
 | 9 . . | 2 6 . | . . . |
 | . . . | 5 . 8 | 3 . . |
 |-------+-------+-------|
 | . . 6 | . . 9 | 2 . . |
 | . . . | 3 . . | . . . |
 | 3 8 . | . . . | . . . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Thu Feb 25, 2010 12:11 am    Post subject: Reply with quote
Two steps using a hint provided recently by Danny.

Quote:
xyz-wing 179 in r3c4 deletes 7 in 41c4,
xy-wing -179 with vertex in r4c4.

Ted
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Thu Feb 25, 2010 3:31 am    Post subject: Reply with quote
One step but what is it?
Quote:
(1=9)r6c5 - r2c5 = (9-1)r3c4 = r9c4; r789c5<>1
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Luke451



Joined: 20 Apr 2008
Posts: 310
Location: Southern Northern California
PostPosted: Thu Feb 25, 2010 4:43 am    Post subject: Reply with quote
arkietech wrote:
One step but what is it?
Quote:
(1=9)r6c5 - r2c5 = (9-1)r3c4 = r9c4; r789c5<>1

That there is your garden variety m-wing, I think.

(a=b)-b=(b-a)=a
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Feb 25, 2010 5:32 am    Post subject: Reply with quote
I'm going to have to bone up on my basics. Ted's two steps were my first two, but I thought I needed more, which were a Type 4 UR (13) and an X-Wing (1).

P.S. 30 minutes later I did it again and solved it with the two steps.
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Wendy W



Joined: 04 Feb 2008
Posts: 144
PostPosted: Thu Feb 25, 2010 11:59 pm    Post subject: Reply with quote
Marty, I used exactly the same four steps that you did. Great minds, eh Laughing
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Fri Feb 26, 2010 12:50 am    Post subject: Reply with quote
Wendy W wrote:
Marty, I used exactly the same four steps that you did. Great minds, eh Laughing

You're the first who ever accused me of having a great mind. Rolling Eyes Very Happy
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