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One Trick Pony 4

 
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Tue Jul 07, 2009 3:16 pm    Post subject: One Trick Pony 4 Reply with quote
An easy one stepper:
Code:

 *-----------*
 |.21|..7|8..|
 |78.|...|...|
 |...|..8|.6.|
 |---+---+---|
 |8..|7..|...|
 |57.|..3|216|
 |.12|..6|...|
 |---+---+---|
 |...|4..|..9|
 |9..|...|628|
 |...|.6.|..5|
 *-----------*

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After basics:
Code:

 *-----------------------------------------------------------*
 | 6     2     1     | 359   359   7     | 8     3459  34    |
 | 7     8     359   | 6     12    4     | 359   359   12    |
 | 34    459   3459  | 12    359   8     | 7     6     12    |
 |-------------------+-------------------+-------------------|
 | 8     469   3469  | 7     12    12    | 3459  3459  34    |
 | 5     7     49    | 89    489   3     | 2     1     6     |
 | 34    1     2     | 59    459   6     | 349   8     7     |
 |-------------------+-------------------+-------------------|
 | 12    56    5678  | 4     78    25    | 13    37    9     |
 | 9     45    457   | 13    37    15    | 6     2     8     |
 | 12    3     78    | 28    6     9     | 14    47    5     |
 *-----------------------------------------------------------*
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
PostPosted: Wed Jul 08, 2009 3:05 pm    Post subject: one trick Reply with quote
I had to resort to an xy-chain to eliminate the 2 in R1C9. Surely there is a more elegant path.

Earl
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Wed Jul 08, 2009 3:35 pm    Post subject: Reply with quote
Hint:
Quote:
Look for a w-wing
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Thu Jul 09, 2009 1:07 pm    Post subject: Reply with quote
Code:
 *-----------------------------------------------------------*
 | 6     2     1     | 359   359   7     | 8     3459  34    |
 | 7     8     359   | 6     12    4     | 359   359   12    |
 | 34    459   3459  | 12    359   8     | 7     6     12    |
 |-------------------+-------------------+-------------------|
 | 8     469   3469  | 7     12    12    | 3459  3459  34    |
 | 5     7     49    | 89    489   3     | 2     1     6     |
 | 34    1     2     | 59    459   6     | 349   8     7     |
 |-------------------+-------------------+-------------------|
 | 12    56    567-8 | 4    *78    25    | 13    37    9     |
 | 9     45   *457   | 13   *37    15    | 6     2     8     |
 | 12    3    *78    | 2-8   6     9     | 14    47    5     |
 *-----------------------------------------------------------*
w-wing 78 did it for me.
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