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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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 Posted: Sat Jun 09, 2012 6:02 am Post subject: Pattern game 10.55 TTHsieh 6.0 |
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| 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: 2468
Location: Northern California Foothills
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| Posted: Sat Jun 09, 2012 12:59 pm Post subject: |
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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 |
*-----------------------------------------------------------*
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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. 
Ted |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Sat Jun 09, 2012 1:31 pm Post subject: |
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| tlanglet wrote: | Sometimes the obvious hides the useful.
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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: 2468
Location: Northern California Foothills
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| Posted: Sat Jun 09, 2012 2:02 pm Post subject: |
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| arkietech wrote: | | tlanglet wrote: | Sometimes the obvious hides the useful.
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Amen! I like one step solutions and they sometimes hide.
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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: 5770
Location: Rochester, NY, USA
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| Posted: Sat Jun 09, 2012 5:24 pm Post subject: |
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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: 5770
Location: Rochester, NY, USA
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| Posted: Sat Jun 09, 2012 8:14 pm Post subject: |
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| 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: 2468
Location: Northern California Foothills
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| Posted: Sun Jun 10, 2012 12:53 pm Post subject: |
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| Marty R. wrote: | | Quote: | | Sometimes the obvious hides the useful. |
Ted, what's obvious to one isn't necessarily obvious to another.
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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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