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While you're watching Daytona ...

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sun Feb 17, 2008 6:41 pm    Post subject: While you're watching Daytona ... Reply with quote
Interesting one.

It eventually fell to Medusa multi-coloring. Does anyone have a better idea?
Code:
Puzzle: M51119174sh(20)
+-------+-------+-------+
| . 4 2 | 8 . . | . . . |
| 1 . 8 | . 5 3 | . . 2 |
| . . . | 4 . . | . . 9 |
+-------+-------+-------+
| . . 1 | 6 . . | . . . |
| . 6 . | 3 . . | . . . |
| . . 5 | . 1 . | . 7 . |
+-------+-------+-------+
| . . . | . 7 . | . . . |
| 7 . . | . . . | . 8 5 |
| . 1 . | 2 3 . | . 6 7 |
+-------+-------+-------+


Keith

Daytona: I pick Tony Stewart, then Jimmie Johnson.
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
PostPosted: Sun Feb 17, 2008 7:53 pm    Post subject: Daytona Reply with quote
An xy-chain from R4C8 to R7C1 can be colored (9) to R5C3, the pincers eliminate 9's which solves the puzzle.

Earl
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nataraj



Joined: 03 Aug 2007
Posts: 1048
Location: near Vienna, Austria
PostPosted: Sun Feb 17, 2008 8:03 pm    Post subject: Reply with quote
I think this is where basics end:
Code:

+--------------------------+--------------------------+--------------------------+
| 36      4       2        | 8       69      169      | 7       5       13       |
| 1       9       8        | 7       5       3        | 6       4       2        |
| 36      5       7        | 4       26      126      | 8       13      9        |
+--------------------------+--------------------------+--------------------------+
| 249     7       1        | 6       248     5        | 234     39      348      |
| 249     6       49       | 3       248     7        | 5       19      148      |
| 8       3       5        | 9       1       24       | 24      7       6        |
+--------------------------+--------------------------+--------------------------+
| 49      8       36       | 5       7       469      | 1       2       34       |
| 7       2       36       | 1       469     469      | 349     8       5        |
| 5       1       49       | 2       3       8        | 49      6       7        |
+--------------------------+--------------------------+--------------------------+


xy-chain, too: '13' in r1c9 ...r7c9,r7c1,r9c3,r5c3...'91' in r5c8 solves box 3 and the puzzle
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sun Feb 17, 2008 9:37 pm    Post subject: Reply with quote
nataraj wrote:
I think this is where basics end:
Code:

+--------------------------+--------------------------+--------------------------+
| 36      4       2        | 8       69      169      | 7       5       13       |
| 1       9       8        | 7       5       3        | 6       4       2        |
| 36      5       7        | 4       26      126      | 8       13      9        |
+--------------------------+--------------------------+--------------------------+
| 249     7       1        | 6      @248     5        | 234     39     @348      |
| 249     6       49       | 3      @248     7        | 5       19     @148      |
| 8       3       5        | 9       1       24       | 24      7       6        |
+--------------------------+--------------------------+--------------------------+
| 49      8       36       | 5       7      -469      | 1       2      #34       |
| 7       2       36       | 1      #469     469      |3-49     8       5        |
| 5       1       49       | 2       3       8        | 49      6       7        |
+--------------------------+--------------------------+--------------------------+


There is a UR @ <48> in R45C59. <8> has nowhere to go. To avoid the DP, <4> must leave in either of C59. In other words, one of # R8C5 or R7C9 must be <4>. We can eliminate <4> from R7C6 and R8C7.

Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Mon Feb 18, 2008 1:36 am    Post subject: Reply with quote
I didn't watch Daytona and didn't think I'd find something that Keith couldn't. I did have one ER that didn't make much difference.

Quote:
There is a UR @ <48> in R45C59. <8> has nowhere to go. To avoid the DP, <4> must leave in either of C59. In other words, one of # R8C5 or R7C9 must be <4>. We can eliminate <4> from R7C6 and R8C7.

After you remove those 4s (I got rid of r8c7 in some other way), an M-Wing zaps the 4 from r5c9, but still, I could not find anything and extended Medusa quickly yielded a wrap which solved the puzzle.

P.S. Looking at the grid some more, I now see that my M-Wing is also simple coloring.
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Mon Feb 18, 2008 8:18 am    Post subject: Reply with quote
Quote:
Daytona: I pick Tony Stewart, then Jimmie Johnson


Dale or Tony for me,

no one saw a newman win coming. the way Kyle busch was driving like a mad man, he doesn't do his antics in the pit areas and the restarts then he wins hands down. and the way tony stewart was in the lead cuttin everyone off with dale jr hanging around the front all day. Bowyer doesn't do something weird and he might have had a shot, and the Jack Daniels car got ripped off.

not many people saw an xy-chain solve this puzzle either.


norm
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