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VH+ by Pat (game 0039)

 
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ravel



Joined: 21 Apr 2006
Posts: 536

PostPosted: Tue Jun 17, 2008 3:36 pm    Post subject: VH+ by Pat (game 0039) Reply with quote

Code:
 +-------+-------+-------+
 | . 1 . | 8 . . | . 3 . |
 | 4 . . | . 1 . | . . 6 |
 | . . . | . . 3 | . . . |
 +-------+-------+-------+
 | 2 . . | . 8 . | 4 . . |
 | . 8 . | 5 . 9 | . 7 . |
 | . . 7 | . 6 . | . . 1 |
 +-------+-------+-------+
 | . . . | 2 . . | . . . |
 | 7 . . | . 9 . | . . 4 |
 | . 3 . | . . 5 | . 1 . |
 +-------+-------+-------+ Pat
>>> play online
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nataraj



Joined: 03 Aug 2007
Posts: 1048
Location: near Vienna, Austria

PostPosted: Wed Jun 18, 2008 6:28 am    Post subject: Reply with quote

I think this puzzle needs an x-wing on 2 (cols 2,8).

After that, one can either go the multi-coloring way (on 5),
or use 2 connected xy-wings (25-29-59 and 25-59-29 in boxes 2,3) and a remote pair 59 (the chain looks simple enough: 59-59-59-59) to solve this baby.
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Wed Jun 18, 2008 9:44 pm    Post subject: Reply with quote

that xy-chain should solve it, nataraj

or at least another piece of it to go along.

Code:
.------------------.------------------.------------------.
| 569   1     2569 | 8     25    4    | 2579  3     579  |
| 4     25    3    | 9     1     7    | 258   258   6    |
| 589   7     2589 | 6     25    3    | 1     4     59   |
:------------------+------------------+------------------:
| 2     6    #59   | 7     8     1    | 4    #59    3    |
| 3     8     1    | 5     4     9    | 6     7     2    |
| 59    4     7    | 3     6     2    | 58    589   1    |
:------------------+------------------+------------------:
| 1     9     4    | 2     3     68   | 57   #56    578  |
| 7    #25   2-58  | 1     9     68   | 3    #26    4    |
| 68    3     268  | 4     7     5    | 29    1     89   |
'------------------'------------------'------------------'


starting in r4c3 {59}-{59}-{56}-{26}-{25} ending in r8c2 removes the 5 in r8c3
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keith



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

PostPosted: Wed Jun 18, 2008 11:16 pm    Post subject: Reply with quote

This is a very delicious puzzle! My only unusual move was an extended XY-wing.

(Ask me how?)

Keith
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Marty R.



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

PostPosted: Thu Jun 19, 2008 1:15 am    Post subject: Reply with quote

Quote:
This is a very delicious puzzle!

Agreed. But I probably needed more moves than anyone else. I played 13 moves, including X-Wing, swordfish, multi-coloring, URs, including a Type 6, W-Wings and XY-Wings, including pincer coloring on both.

The swordfish was my first in perhaps two years. I saw an extended XY-Wing which Keith mentioned, which I learned as XY-Wing Chain, but couldn't do anything with it, even with pincer coloring.
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