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Aug 4 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 684
Location: Dar es Salaam Tanzania

PostPosted: Sun Aug 03, 2014 11:19 pm    Post subject: Aug 4 VH Reply with quote

Code:

+-----------+-------------+----------+
| 5   8 4   | 9   1   3   | 6  2   7 |
| 27  9 1   | 6   247 24  | 3  8   5 |
| 237 6 37  | *27  5   8   | 4  9   1 |
+-----------+-------------+----------+
| 4   5 9   | #28  6   1   | 28 7   3 |
| 1   3 2   | 58-7 *78  9   | 58 6   4 |
| 8   7 6   | 3   24  245 | 25 1   9 |
+-----------+-------------+----------+
| 36  1 8   | 45  9   56  | 7  345 2 |
| 9   2 35  | 458 38  7   | 1  345 6 |
| 367 4 357 | 1   23  256 | 9  35  8 |
+-----------+-------------+----------+
XY-Wing 28-7 pivoted in r4c4; r5c4<>7; stte.
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Marty R.



Joined: 12 Feb 2006
Posts: 5162
Location: Rochester, NY, USA

PostPosted: Mon Aug 04, 2014 5:04 pm    Post subject: Reply with quote

I missed Clement's XY-Wing.

1)Type 6 UR (24)r26,c56=>r2c6r6c5=4
2) XY-Wing (78-2), pivot r5c5=>r3c4,r6c5<>2
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dongrave



Joined: 06 Mar 2014
Posts: 52

PostPosted: Thu Aug 07, 2014 11:10 pm    Post subject: Reply with quote

Type 6? Holy crow! How many UR types are there? Hey Marty! Maybe you can get Griffeths to hold off from adding URs as standard VH moves until I learn them all! (I know what I'm going to be reading about tonight.)
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Marty R.



Joined: 12 Feb 2006
Posts: 5162
Location: Rochester, NY, USA

PostPosted: Fri Aug 08, 2014 12:27 am    Post subject: Reply with quote

Not that many. Laughing

A Type 6 is when one of the numbers is an X-Wing and the bivalue cells are diagonal. Each of these two cells can be solved with the X-Wing number.

Basically, types, 1, 2, 3, 4, and 6 are used fairly commonly. You can handle that, right? Wink
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keith



Joined: 19 Sep 2005
Posts: 3174
Location: near Detroit, Michigan, USA

PostPosted: Sun Aug 10, 2014 7:28 pm    Post subject: Reply with quote

Unique Rectangles:

http://www.dailysudoku.com/sudoku/forums/viewtopic.php?p=17996

Keith
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estrenosenlatino



Joined: 11 Aug 2014
Posts: 1

PostPosted: Mon Aug 11, 2014 8:22 pm    Post subject: OMG! Reply with quote

great! Smile
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dongrave



Joined: 06 Mar 2014
Posts: 52

PostPosted: Tue Aug 12, 2014 10:06 pm    Post subject: Reply with quote

Hey Keith, Thanks for the link! Looks interesting! Don.
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