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arkietech
Joined: 31 Jul 2008 Posts: 1834 Location: Northwest Arkansas USA
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Posted: Mon Feb 20, 2012 2:12 pm Post subject: Pattern Game dobrichev 2/12/12 6.0 |
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Code: | *-----------*
|1..|23.|..4|
|..2|..5|...|
|.6.|...|7..|
|---+---+---|
|2..|..6|.8.|
|6..|.1.|..9|
|.3.|4..|.2.|
|---+---+---|
|..3|...|8..|
|...|8.9|...|
|9..|.7.|..1|
*-----------*
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Marty R.
Joined: 12 Feb 2006 Posts: 5770 Location: Rochester, NY, USA
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Posted: Mon Feb 20, 2012 5:44 pm Post subject: |
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XY-Chain ABCDE.
Code: | +------------+--------+-----------------+
| 1 9 7 | 2 3 8 | 56 56 4 |
| 3 4 2 | 7 6 5 | 9 1 8 |
| 8 6 5 | 1 9 4 | 7 3 2 |
+------------+--------+-----------------+
| 2 17 C14 | 9 5 6 | B34 8 A37 |
| 6 78 48 | 3 1 2 | 45 45-7 9 |
| 5 3 9 | 4 8 7 | 1 2 6 |
+------------+--------+-----------------+
| 47 25 3 | 6 24 1 | 8 9 5-7 |
| 47 125 D16 | 8 24 9 | 236 E67 35-7|
| 9 28 68 | 5 7 3 | 246 46 1 |
+-----------+--------+------------------+ |
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daj95376
Joined: 23 Aug 2008 Posts: 3854
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Posted: Mon Feb 20, 2012 6:20 pm Post subject: |
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My solver found an XY-Wing and an XY-Chain. I kept the XY-Wing ... and found a BUG+3 for the second step.
Code: | <68+4> XY-Wing r9c3/r5c3+r9c8 <> 4 r5c8
BUG+3
r8c2=2 r8c7<>2
r8c7=6 r8c7<>2
r8c9=7 r8c8=6 r9c7=2 r8c7<>2
+-----------------------------------------------------+
| 1 9 7 | 2 3 8 | 56 56 4 |
| 3 4 2 | 7 6 5 | 9 1 8 |
| 8 6 5 | 1 9 4 | 7 3 2 |
|-----------------+-----------------+-----------------|
| 2 17 14 | 9 5 6 | 34 8 37 |
| 6 78 48 | 3 1 2 | 45 57 9 |
| 5 3 9 | 4 8 7 | 1 2 6 |
|-----------------+-----------------+-----------------|
| 47 25 3 | 6 24 1 | 8 9 57 |
| 47 15+2 16 | 8 24 9 | 23+6 67 35+7 |
| 9 28 68 | 5 7 3 | 26 4 1 |
+-----------------------------------------------------+
# 27 eliminations remain
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JC Van Hay
Joined: 13 Jun 2010 Posts: 494 Location: Charleroi, Belgium
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Posted: Mon Feb 20, 2012 7:51 pm Post subject: |
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1. Lot of 1-step 4-SIS solution.Example : 1r8c3=1r8c2-(1=7)r4c2-7r5c2=7r5c8-(7=6)r8c8 => -6r8c3; stte 2. Marty's solution may be recasted into anALS-XZ Rule : (734=1)r4c379-(1=67)r8c38 => -7r5c8.r78c9 3. Danny's BUG+3 may also be viewed asBUG+NQ(2467)r8c279.158 => -6r8c3
[edit] Removal of a typo noted by Ronk : r8c279.158 instead of r8c279.18 in #3.
Last edited by JC Van Hay on Mon Feb 20, 2012 10:29 pm; edited 1 time in total |
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ronk
Joined: 07 May 2006 Posts: 398
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Posted: Mon Feb 20, 2012 10:21 pm Post subject: |
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JC Van Hay wrote: | 3. Danny's BUG+3 may also be viewed asBUG+NQ(2467)r8c279.18 => -6r8c3 |
Looks like this is missing r8c5. |
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Marty R.
Joined: 12 Feb 2006 Posts: 5770 Location: Rochester, NY, USA
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Posted: Mon Feb 20, 2012 10:29 pm Post subject: |
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I think the BUG+3 can be played as a pincer situation. In box 9 the two possibilities are a 67 pseudo cell setting r7c9<>7 or =5 which leads to r7c2=2. That and the box 7 possibility of 2 are pincers setting r9c2<>2. |
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tlanglet
Joined: 17 Oct 2007 Posts: 2468 Location: Northern California Foothills
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Posted: Fri Feb 24, 2012 1:59 pm Post subject: |
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Another solution is the BUG-Lite+2(456)r159c78.
(6=8)r9c3-(8=2)r9c2-BUG-Lite+2(456)r159c78[(2)r9c7=(7)r5c8]-(7=6)r8c8; r8c3<>6
Ted |
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