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Free Press May 22, 2009

 
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keith



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

PostPosted: Fri May 22, 2009 10:06 pm    Post subject: Free Press May 22, 2009 Reply with quote

An enjoyable VH.
Code:
Puzzle: FP052209
+-------+-------+-------+
| . . 5 | . . 6 | 1 . . |
| 8 . . | . . 3 | . . 4 |
| . 4 . | . . . | . 8 3 |
+-------+-------+-------+
| . . . | 8 . 7 | . 9 . |
| . 6 . | . 2 . | . . . |
| . 7 . | 6 . 1 | . . . |
+-------+-------+-------+
| 9 3 . | . . . | . 5 . |
| 7 . . | 2 . . | . . 8 |
| . . . | 1 . . | 3 . . |
+-------+-------+-------+
Keith
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

PostPosted: Sat May 23, 2009 12:30 am    Post subject: Reply with quote

One step:
Quote:
w-wing 45 by 4 in r6c15
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keith



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

PostPosted: Sat May 23, 2009 1:47 am    Post subject: Reply with quote

I used two UR's when I first solved it. However, after basics:
Code:
+----------------+----------------+----------------+
| 3    2    5    | 4    8    6    | 1    7    9    |
| 8    9    17   | 5    17   3    | 6    2    4    |
| 16   4    167  | 9    17   2    | 5    8    3    |
+----------------+----------------+----------------+
| 1245 15   3    | 8    45   7    | 24   9    6    |
| 45   6    8    | 3    2    9    | 7    14   15   |
| 245  7    9    | 6    45   1    | 8    3    25   |
+----------------+----------------+----------------+
| 9    3    14   | 7    6    8    | 24   5    12   |
| 7    15   146  | 2    3    45   | 9    146  8    |
| 56   8    2    | 1    9    45   | 3    46   7    |
+----------------+----------------+----------------+
A UR 17 or an XY-wing 24-5 does it in.

The basics involve some hidden pairs, and an "advanced" move may be easier to spot.

Keith
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tlanglet



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

PostPosted: Sat May 23, 2009 12:58 pm    Post subject: Reply with quote

I used a xy-wing 145.

Ted
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