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Free Press January 15, 2010

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Sat Jan 16, 2010 5:10 pm    Post subject: Free Press January 15, 2010 Reply with quote

Code:
Puzzle: FP011510
+-------+-------+-------+
| . . . | 2 . 3 | 7 . . |
| 4 . . | . . . | . . . |
| . . 9 | 8 6 . | . . . |
+-------+-------+-------+
| . . . | . . . | 9 . 3 |
| 7 . 3 | . 9 . | 6 . 4 |
| 8 . 5 | . . . | . . . |
+-------+-------+-------+
| . 2 . | . 8 4 | 1 . . |
| . . . | . . . | . . 8 |
| . . 6 | 3 . 5 | . . . |
+-------+-------+-------+
Quote:
Needs a long chain at the end.
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Sat Jan 16, 2010 10:46 pm    Post subject: Reply with quote

I used ERs on 3 and 5, killed a potential DP on 19-17-79 and finished with a six-cell XY-Chain. The purists might not like my last move because one of the cells was a trivalue.
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tlanglet



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

PostPosted: Sun Jan 17, 2010 2:43 pm    Post subject: Reply with quote

Marty, spotting the 6-cell DP was great! Congratulations!

I started this puzzle with a finned x-wing 1, a finned x-wing 3 and an ER 5. Then, while looking for xy-wings, I found an chain to complete the task.

(1=4)r8c3 - (4=5)r8c2 - r8c7 = r3c7 - (5=2)r3c9 - (2=1)r3c1; r2c3<>1.

Ted
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