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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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 Posted: Sat Aug 30, 2008 12:56 pm Post subject: LA Times / Freep - August 29, 2008 |
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Not yet done: | Code: | Puzzle: FP082908
+-------+-------+-------+
| 6 . . | 1 . . | . . 2 |
| . 7 . | . . . | 6 8 . |
| 3 . . | . 9 . | . . 1 |
+-------+-------+-------+
| . 1 . | . 3 2 | . . . |
| . . 6 | . . . | 7 . . |
| 4 . . | 9 6 . | . 1 . |
+-------+-------+-------+
| 9 . . | . 1 . | . . 4 |
| . 4 3 | . . . | . 6 . |
| . . . | . . 9 | . . 8 |
+-------+-------+-------+ |
Keith |
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cgordon
Joined: 04 May 2007
Posts: 769
Location: ontario, canada
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| Posted: Sat Aug 30, 2008 3:46 pm Post subject: |
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What a splendid sudoku !! - though I may have exceeded the legal limit for solutions. A skyscraper on <9>; a Type 4 UR for <35>; a finned x-wing on <4>: an ER on <7>; and an xy-wing to finish it off.
Actually I'm not sure that was the proper shape for a finned x-wing on <4> at R4C4, R5C45, R9C45. But looking at the pattern - it is clear that there can be no 4s in Box 2 C45. |
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nataraj
Joined: 03 Aug 2007
Posts: 1048
Location: near Vienna, Austria
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| Posted: Sat Aug 30, 2008 4:34 pm Post subject: |
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When done with basics:
| Code: |
+--------------------------+--------------------------+--------------------------+
| 6 589 4589 | 1 578 578 | 3 457 2 |
| 25 7 1 | 3 25 4 | 6 8 9 |
| 3 258 2458 | 2578 9 6 | 45 457 1 |
+--------------------------+--------------------------+--------------------------+
| 578 1 579 | 4578 3 2 | 48 49 6 |
| 258 2359 6 | 458 458 1 | 7 249 35 |
| 4 235 257 | 9 6 578 | 28 1 35 |
+--------------------------+--------------------------+--------------------------+
| 9 68 78 | 67 1 3 | 25 25 4 |
| 1 4 3 | 258 258 58 | 9 6 7 |
| 257 256 257 | 467 47 9 | 1 3 8 |
+--------------------------+--------------------------+--------------------------+
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no skyscraper on 9, hm ... must have missed that one.
But
(Multi-) coloring (7), using the strong links in cols 1,5 and 6,
x-wing (5), and
BUG+1 |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Sat Aug 30, 2008 7:11 pm Post subject: |
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nataraj, the simpler coloring pattern on 7 is the one I have marked (#) below, does the same thing.
the UR on {3,5} is nice to see also marked ( * ) removes the 5 from r56c2
| Code: | .------------------.------------------.------------------.
| 6 589 4589 | 1 578 578 | 3 457 2 |
| 25 7 1 | 3 25 4 | 6 8 9 |
| 3 258 2458 | 2578 9 6 | 45 457 1 |
:------------------+------------------+------------------:
| 578 1 579 |#4578 3 2 | 48 49 6 |
| 258 *2359 6 | 458 458 1 | 7 249 *35 |
| 4 *235 25-7 | 9 6 #578 | 28 1 *35 |
:------------------+------------------+------------------:
| 9 68 #78 |#67 1 3 | 25 25 4 |
| 1 4 3 | 258 258 58 | 9 6 7 |
| 257 256 257 | 467 47 9 | 1 3 8 |
'------------------'------------------'------------------' |
xy-wing finishes it |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sat Aug 30, 2008 7:34 pm Post subject: |
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1) UR on 35
2) ER
3) Hidden UR on 58
4) W-Wing on 58 |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Sat Aug 30, 2008 8:15 pm Post subject: |
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After basics: Nothing new on my part. Just trimming previous results.
1) ER or finned X-Wing for [r6c3]<>7 --or-- Sashimi X-Wing for [r4c4]<>7
2) XY-Wing for [r4c4]<>8 |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sun Aug 31, 2008 2:22 pm Post subject: |
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I had the UR <35>, a kite on <7>, then multi-coloring on <5> that set up the BUG+1. Just slightly different from the others.
Ted |
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Asellus
Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA
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| Posted: Sun Aug 31, 2008 11:30 pm Post subject: |
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I'm surprised no one mentioned the Skyscraper on 7 in r67 as the first step. Norm's multi-coloring comes close and is your basic Turbot Fish.
Like nataraj, I, too, then went for the 5 X-Wing. The resulting BUG+1 can also be done in with an XY-Wing. |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Mon Sep 01, 2008 12:16 am Post subject: |
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| Asellus wrote: | | I'm surprised no one mentioned the Skyscraper on 7 in r67 as the first step. |
Ahem ...
| Code: | | Sashimi X-Wing for [r4c4]<>7 |
I reserve Skyscrapers for when eliminations exist in two boxes. |
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