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Pattern game 10.55 TTHsieh 6.0

 
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arkietech



Joined: 31 Jul 2008
Posts: 1727
Location: Northwest Arkansas USA

PostPosted: Sat Jun 09, 2012 6:02 am    Post subject: Pattern game 10.55 TTHsieh 6.0 Reply with quote

Code:

 *-----------*
 |...|...|...|
 |..1|234|5..|
 |.3.|5.6|.1.|
 |---+---+---|
 |.13|...|74.|
 |.7.|...|.5.|
 |.56|...|18.|
 |---+---+---|
 |.4.|8.2|.3.|
 |..7|641|9..|
 |...|...|...|
 *-----------*
 

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tlanglet



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

PostPosted: Sat Jun 09, 2012 12:59 pm    Post subject: Reply with quote

Code after basics:
Code:
 *-----------------------------------------------------------*
 | 6     2     5     | 17    18    78    | 34    9     34    |
 | 78    9     1     | 2     3     4     | 5     6     78    |
 | 478   3     48    | 5     9     6     | 28    1     278   |
 |-------------------+-------------------+-------------------|
 | 28    1     3     | 9     68    5     | 7     4     26    |
 | 2489  7     48    | 14    168   38    | 23    5     2369  |
 | 49    5     6     | 47    2     37    | 1     8     39    |
 |-------------------+-------------------+-------------------|
 | 5     4     9     | 8     7     2     | 6     3     1     |
 | 3     8     7     | 6     4     1     | 9     2     5     |
 | 1     6     2     | 3     5     9     | 48    7     48    |
 *-----------------------------------------------------------*

Look at the AUR(78)r23c19. At first glance it appears as a Type 4 UR that results in r3c19<>8 but that does not advance the puzzle. However, we get a one step solution using the internal inferences of the AUR.

(1=4)r5c4-r6c4=r6c1-AUR(78)r23c19[(4)r3c1=(2)r3c9)]-(2=6)r4c9-r4c5=r5c5; r5c5<>1

Sometimes the obvious hides the useful. Very Happy

Ted
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arkietech



Joined: 31 Jul 2008
Posts: 1727
Location: Northwest Arkansas USA

PostPosted: Sat Jun 09, 2012 1:31 pm    Post subject: Reply with quote

tlanglet wrote:
Sometimes the obvious hides the useful. Very Happy

Amen! I like one step solutions and they sometimes hide.
Code:
 *-----------------------------------------------------------*
 | 6     2     5     | 17    18    78    | 34    9     34    |
 | 78    9     1     | 2     3     4     | 5     6     78    |
 | 478   3     48    | 5     9     6     | 28    1     278   |
 |-------------------+-------------------+-------------------|
 | 28    1     3     | 9     68    5     | 7     4     26    |
 |d489-2 7     48    | 14    168   38    |a23    5     2369  |
 |c49    5     6     | 47    2     37    | 1     8    b39    |
 |-------------------+-------------------+-------------------|
 | 5     4     9     | 8     7     2     | 6     3     1     |
 | 3     8     7     | 6     4     1     | 9     2     5     |
 | 1     6     2     | 3     5     9     | 48    7     48    |
 *-----------------------------------------------------------*
h3-wing
(2=3)r5c7-(3=9)r6c9-r6c1=(9)r5c1 => r5c1<>2; stte


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tlanglet



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

PostPosted: Sat Jun 09, 2012 2:02 pm    Post subject: Reply with quote

arkietech wrote:
tlanglet wrote:
Sometimes the obvious hides the useful. Very Happy

Amen! I like one step solutions and they sometimes hide.

Clean, simple 4-cell chains such as you just posted are also great.

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5164
Location: Rochester, NY, USA

PostPosted: Sat Jun 09, 2012 5:24 pm    Post subject: Reply with quote

Potential DP 28-68-26 in boxes 456. Possibilities yield common outcome r5c3=8.

Code:
*-----------------------------------------------------------*
 | 6     2     5     | 17    18    78    | 34    9     34    |
 | 78    9     1     | 2     3     4     | 5     6     78    |
 | 478   3     48    | 5     9     6     | 28    1     278   |
 |-------------------+-------------------+-------------------|
 | 28    1     3     | 9     68    5     | 7     4     26    |
 | 2489  7     48    | 14    168   38    | 23    5     2369  |
 | 49    5     6     | 47    2     37    | 1     8     39    |
 |-------------------+-------------------+-------------------|
 | 5     4     9     | 8     7     2     | 6     3     1     |
 | 3     8     7     | 6     4     1     | 9     2     5     |
 | 1     6     2     | 3     5     9     | 48    7     48    |
 *-----------------------------------------------------------*
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Marty R.



Joined: 12 Feb 2006
Posts: 5164
Location: Rochester, NY, USA

PostPosted: Sat Jun 09, 2012 8:14 pm    Post subject: Reply with quote

Quote:
Sometimes the obvious hides the useful.


Ted, what's obvious to one isn't necessarily obvious to another. And, not surprisingly, I don't understand your solution.

I also saw the UR and saw the futility of playing it as a Type 4. And I'm mad at myself for not seeing the first time around what I saw after the fact. To kill that DP, r3c1=4 or r3c9=2. The 2 proves r6c4=4 and the pincers set r6c1<>4.
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tlanglet



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

PostPosted: Sun Jun 10, 2012 12:53 pm    Post subject: Reply with quote

Marty R. wrote:
Quote:
Sometimes the obvious hides the useful.


Ted, what's obvious to one isn't necessarily obvious to another.

Marty, the intent of my comment was to remind folks, including myself, that it is possible to work many patterns to get different and/or additional deletions. Just taking the standard pattern deletions may not be fruitful but alternative approaches may be a winner.

Ted
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