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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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 Posted: Sun Jul 13, 2008 8:45 pm Post subject: 7/13 one trick pony |
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| Code: | . . .|. . 2|9 8 .
6 . .|8 . .|. 7 .
. . .|. 5 .|6 . .
-----+-----+-----
. 1 .|. . 3|. . .
9 . .|. 1 .|. . 4
. . .|4 . .|. 5 .
-----+-----+-----
. . 6|. 9 .|. . .
. 9 .|. . 7|. . 2
. 3 8|5 . .|. . . |
| Code: | .------------------------.------------------------.------------------------.
| 13457 457 13457 | 1367 3467 2 | 9 8 135 |
| 6 245 123459 | 8 34 149 | 24 7 135 |
| 123478 2478 123479 | 1379 5 149 | 6 24 13 |
:------------------------+------------------------+------------------------:
| 45 1 45 | 2679 2678 3 | 278 269 6789 |
| 9 2678 27 | 267 1 5 | 2378 236 4 |
| 2378 2678 237 | 4 2678 689 | 1 5 6789 |
:------------------------+------------------------+------------------------:
| 12457 2457 6 | 123 9 148 | 34578 134 78 |
| 145 9 145 | 136 3468 7 | 3458 1346 2 |
| 1247 3 8 | 5 246 146 | 47 1469 679 |
'------------------------'------------------------'------------------------' |
this is the one trick pony for 7/13... the rule for the one trick ponies is that one technique is all that is needed to solve them, even if you have to use it more than once.
i am at a loss. I see some interesting coloring on 8 and the UR {4,5} is of no help. then there is a finned creature on 6 and 8, but that is at least 3 different techniques. I am guessing ALS is the Key here and I will leave that up the ALS people. |
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nataraj
Joined: 03 Aug 2007
Posts: 1048
Location: near Vienna, Austria
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| Posted: Sun Jul 13, 2008 9:16 pm Post subject: |
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Coloring is the "one trick pony".
First, the "interesting coloring" on "8" :
8:-r3c1=r6c1-r6c6=r7c6-r8c5=r8c7-r5c7=r5c2-;r3c2<>8
8:-r5c2=r5c7-r8c7=r8c5-r7c6=r6c6-;r6c2<>8
| Code: |
+·····+·····+·····+
· · · ·
· · · ·
· · · ·
· · · ·
·*-* · · ·
+|····+·····+·····+
·| · o ·o o·
·| · · ·
·| *---------* ·
·| · · ·
·* o · o *· o·
+·····+····|+·····+
· · *·o 7·
· · / · ·
· · *---* ·
· · · ·
· · · ·
+·····+·····+·····+
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and later, again coloring on "8":
8:-r4c5=r4c7-r6c9=r7c9-r7c6=r6c6-;r6c5<>8
8:-r4c7=r4c5-r6c6=r7c6-;r7c7<>8
| Code: |
+·····+·····+·····+
· · · ·
· · · ·
· · · ·
· · · ·
· · · ·
+·····+·····+·····+
· · 7---7 ·
· · · \ ·
· · · \ ·
· · · \ ·
· · o 9· *·
+·····+····|+····|+
· · *·o 7·
· · / · ·
· · *---* ·
· · · ·
· · · ·
+·····+·····+·····+
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no other methods are needed ... |
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Asellus
Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA
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| Posted: Sun Jul 13, 2008 10:45 pm Post subject: |
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Related to the coloring and as an alternate way to see it, perhaps the one trick is ER.
nataraj's first pair of colorings can be collapsed into a single application of ERs. r6c12 see r5c2 directly and r6c7 via the ERs in b985.
The second set of colorings can also be seen as two ER eliminations (and, of course, easiest of all as an X-Wing... but that's a different "trick"). |
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