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Vanhegan extreme September 23, 2012

 
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arkietech



Joined: 31 Jul 2008
Posts: 1728
Location: Northwest Arkansas USA

PostPosted: Sun Sep 23, 2012 5:04 am    Post subject: Vanhegan extreme September 23, 2012 Reply with quote

Code:

 *-----------*
 |...|6.1|...|
 |7..|.5.|..2|
 |.3.|.8.|.6.|
 |---+---+---|
 |..4|165|8..|
 |..7|...|4..|
 |..5|742|6..|
 |---+---+---|
 |.6.|.3.|.9.|
 |4..|.1.|..3|
 |...|5.8|...|
 *-----------*
 


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tlanglet



Joined: 17 Oct 2007
Posts: 2461
Location: Northern California Foothills

PostPosted: Sun Sep 23, 2012 1:04 pm    Post subject: Reply with quote

Code after basics:
Code:
*-----------------------------------------------------------*
 | 258   2458  9     | 6     27    1     | 3     578   4578  |
 | 7     148   6     | 3     5     49    | 19    18    2     |
 | 125   3     12    | 24    8     479   | 1579  6     1457  |
 |-------------------+-------------------+-------------------|
 | 239   29    4     | 1     6     5     | 8     237   79    |
 | 6     12    7     | 8     9     3     | 4     125   15    |
 | 1389  189   5     | 7     4     2     | 6     13    19    |
 |-------------------+-------------------+-------------------|
 | 125   6     128   | 24    3     47    | 1257  9     1578  |
 | 4     257   28    | 9     1     6     | 257   578   3     |
 | 129   1279  3     | 5     27    8     | 127   4     6     |
 *-----------------------------------------------------------*

I noticed several interesting moves before I found this one step solution.

AXY-wing(19-4)r2c7+r2c6|r3c9 = (57-4)r3c9=(4-8)r1c9=(8-1)r7c9=r79c7-(1=9)r2c7-(9=4)r2c6; -4r3c46

Ted
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tlanglet



Joined: 17 Oct 2007
Posts: 2461
Location: Northern California Foothills

PostPosted: Sun Sep 23, 2012 6:48 pm    Post subject: Reply with quote

Another solution is an "almost AIC".

AAIC {(2=8)r7c3-r8c3=r8c8-(8=1=9=4)r2c876-(4=2)r3c4} = 1r7c3-r7c79=r9c7-(1=9)r2c7-(9=4)r2c6-(4=2)r3c4; -2r7c4

Ted
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ronk



Joined: 07 May 2006
Posts: 397

PostPosted: Sun Sep 23, 2012 7:11 pm    Post subject: Reply with quote

tlanglet wrote:

Code:
*-----------------------------------------------------------*
 | 258   2458  9     | 6     27    1     | 3     578   4578  |
 | 7     148   6     | 3     5     49    | 19    18    2     |
 | 125   3     12    | 24    8     479   | 1579  6     1457  |
 |-------------------+-------------------+-------------------|
 | 239   29    4     | 1     6     5     | 8     237   79    |
 | 6     12    7     | 8     9     3     | 4     125   15    |
 | 1389  189   5     | 7     4     2     | 6     13    19    |
 |-------------------+-------------------+-------------------|
 | 125   6     128   | 24    3     47    | 1257  9     1578  |
 | 4     257   28    | 9     1     6     | 257   578   3     |
 | 129   1279  3     | 5     27    8     | 127   4     6     |
 *-----------------------------------------------------------*

AXY-wing(19-4)r2c7+r2c6|r3c9 = (57-4)r3c9=(4-8)r1c9=(8-1)r7c9=r79c7-(1=9)r2c7-(9=4)r2c6; -4r3c46

This works without the AXY-wing part (which I didn't get): (4)r3c9=(4-8)r1c9=(8-1)r7c9=r79c7-(1=9)r2c7-(9=4)r2c6; -4r3c46
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arkietech



Joined: 31 Jul 2008
Posts: 1728
Location: Northwest Arkansas USA

PostPosted: Sun Sep 23, 2012 7:28 pm    Post subject: Reply with quote

Code:

 *-----------------------------------------------------------*
 | 258   2458  9     | 6     27    1     | 3     578   4578  |
 | 7     148   6     | 3     5     49    | 9-1  a18    2     |
 | 125   3     12    | 24    8     479   | 579-1 6     1457  |
 |-------------------+-------------------+-------------------|
 | 239   29    4     | 1     6     5     | 8     237   79    |
 | 6     12    7     | 8     9     3     | 4     125   15    |
 | 1389  189   5     | 7     4     2     | 6     13    19    |
 |-------------------+-------------------+-------------------|
 | 125   6     128   | 24    3     47    |d1257  9    c1578  |
 | 4     257   28    | 9     1     6     | 257  b578   3     |
 | 129   1279  3     | 5     27    8     |d127   4     6     |
 *-----------------------------------------------------------*
Wing
(1=8)r2c8-r8c8=(8-1)r7c9=1r79c7 => -1r23c8; stte


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tlanglet



Joined: 17 Oct 2007
Posts: 2461
Location: Northern California Foothills

PostPosted: Sun Sep 23, 2012 8:33 pm    Post subject: Reply with quote

ronk wrote:
tlanglet wrote:

Code:
*-----------------------------------------------------------*
 | 258   2458  9     | 6     27    1     | 3     578   4578  |
 | 7     148   6     | 3     5     49    | 19    18    2     |
 | 125   3     12    | 24    8     479   | 1579  6     1457  |
 |-------------------+-------------------+-------------------|
 | 239   29    4     | 1     6     5     | 8     237   79    |
 | 6     12    7     | 8     9     3     | 4     125   15    |
 | 1389  189   5     | 7     4     2     | 6     13    19    |
 |-------------------+-------------------+-------------------|
 | 125   6     128   | 24    3     47    | 1257  9     1578  |
 | 4     257   28    | 9     1     6     | 257   578   3     |
 | 129   1279  3     | 5     27    8     | 127   4     6     |
 *-----------------------------------------------------------*

AXY-wing(19-4)r2c7+r2c6|r3c9 = (57-4)r3c9=(4-8)r1c9=(8-1)r7c9=r79c7-(1=9)r2c7-(9=4)r2c6; -4r3c46

This works without the AXY-wing part (which I didn't get): (4)r3c9=(4-8)r1c9=(8-1)r7c9=r79c7-(1=9)r2c7-(9=4)r2c6; -4r3c46


"I see, I see" said the blind man. I noticed the unusual characteristics of the "almost" path but did not pause to think about the implications.

The xy-wing consisted of pincer r2c6=49, pivot r2c7=19 and pincer r3c9=14; the almost extra part is r3c9=57.

Ron, do you have a suggestion for a more appropriate notational statement? Would brackets around the xy-wing make the meaning clearer?

Ted
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ronk



Joined: 07 May 2006
Posts: 397

PostPosted: Mon Sep 24, 2012 1:48 pm    Post subject: Reply with quote

tlanglet wrote:
Ron, do you have a suggestion for a more appropriate notational statement? Would brackets around the xy-wing make the meaning clearer?

Sorry, but I have no suggestion on notation. Using r3c9 as both a strong and weak inference set makes it a difficult AIC.
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