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vh 110311

 
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arkietech



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

PostPosted: Thu Nov 03, 2011 12:34 pm    Post subject: vh 110311 Reply with quote

Code:
 *-----------*
 |..5|...|.7.|
 |4..|237|...|
 |...|..4|6.9|
 |---+---+---|
 |...|...|9..|
 |2..|719|..4|
 |..3|...|...|
 |---+---+---|
 |9.2|3..|...|
 |...|846|..2|
 |.4.|...|3..|
 *-----------*
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Marty R.



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

PostPosted: Thu Nov 03, 2011 4:46 pm    Post subject: Reply with quote

XY-Wing (185); r79c5<>5.
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arkietech



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

PostPosted: Thu Nov 03, 2011 5:42 pm    Post subject: Reply with quote

Code:
 *-----------------------------------------------------------*
 | 18    2     5     | 69    69   *18    | 4     7     3     |
 | 4     6     9     | 2     3     7     | 158   158   158   |
 | 1378  1378  178   | 15  *a58    4     | 6     2     9     |
 |-------------------+-------------------+-------------------|
 | 1578  1578  4     | 56    2     3     | 9     1568  1578  |
 | 2     58    6     | 7     1     9     | 58    3     4     |
 | 157   9     3     | 4    b568  c58    | 2     156   157   |
 |-------------------+-------------------+-------------------|
 | 9     1578  2     | 3     7-5 *d15    | 1578  4     6     |
 | 1357  1357  17    | 8     4     6     | 157   9     2     |
 | 6     4     178   | 159   579   2     | 3     158   158   |
 *-----------------------------------------------------------*
m wing?
(5=8)r3c5-(8)r6c5=(8-5)r6c6=(5)r7c6 => r79c5<>5
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Marty R.



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

PostPosted: Thu Nov 03, 2011 6:39 pm    Post subject: Reply with quote

Quote:
m wing?

Yes, that's a classic M-Wing. My initial solution was an M-Wing (on 15), but then I noticed the XY-Wing and when there are alternative moves, I usually call it by the less advanced one.
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