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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Sat Dec 05, 2009 1:02 am Post subject: Puzzle XY 09/12/04 |
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I disavow any responsibility for your state of mind after tackling this puzzle. (three stepper!)
| Code: | +-----------------------+
| . . . | . . . | 7 . . |
| . 7 . | . . . | 4 . 5 |
| . . 4 | . . 7 | . 2 6 |
|-------+-------+-------|
| . . . | . 4 . | . . . |
| . . . | 5 9 8 | . . . |
| . . 9 | . 6 1 | 8 7 . |
|-------+-------+-------|
| 4 3 . | . . 5 | 9 . 7 |
| . . 7 | . . 6 | . . 4 |
| . 9 8 | . . . | 6 5 . |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Sat Dec 05, 2009 3:06 am Post subject: |
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Two-stepper:
After basics: | Code: | +-------------------+-------------------+-------------------+
| 36 12 5 | 12346 123 2349 | 7 139 8 |
| 368 7 123 | 12368 1238 239 | 4 139 5 |
| 9 18 4 | 138@ 5 7 | 13@ 2 6 |
+-------------------+-------------------+-------------------+
| 38 128 123 | 7 4 23 | 5 6 9 |
| 7 6 23 | 5 9 8 | 12-3 4 123 |
| 5 4 9 | 23# 6 1 | 8 7 23# |
+-------------------+-------------------+-------------------+
| 4 3 6 | 128 128 5 | 9 18 7 |
| 12 5 7 | 9 138 6 | 123 138 4 |
| 12 9 8 | 134 7 34 | 6 5 123 |
+-------------------+-------------------+-------------------+ |
Skyscraper eliminates 3 in R5C7. Leading to: | Code: | +----------------+----------------+----------------+
| 36 12 5 | 1246 123 249 | 7 19 8 |
| 68 7 123 | 68 123 29 | 4 19 5 |
| 9 18 4 | 18 5 7 | 3 2 6 |
+----------------+----------------+----------------+
| 38 128 123 | 7 4 23 | 5 6 9 |
| 7 6 23 | 5 9 8 | 12% 4 123% |
| 5 4 9 | 23 6 1 | 8 7 23 |
+----------------+----------------+----------------+
| 4 3 6 | 12 12 5 | 9 8 7 |
| 12% 5 7 | 9 8 6 | 12% 3 4 |
| 12% 9 8 | 34 7 34 | 6 5 12% |
+----------------+----------------+----------------+ |
DP 12 means R5C9 is 3.
Keith
PS: Danny, don't you hate it when we do that!  |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sat Dec 05, 2009 5:36 am Post subject: |
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I had the same two steps as Keith.
Ted |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Sat Dec 05, 2009 7:40 am Post subject: |
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Congratulations Keith and Ted 
Somehow, I had it in my head that an ugly grouped 2-String Kite was needed for an elimination in <3> after the Skyscraper.
You caught me sleeping at the wheel 
Maybe tomorrow's puzzle will be more of a challenge.
Regards, Danny |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sat Dec 05, 2009 4:15 pm Post subject: |
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Danny, here is a three stepper for you...............
skyscraper on 3 in r36c4,
finned x-wing on 2 in r14c26,
xy-wing 36-8 with vertex 36 in r1c1, pincer 68 in r2c1 and pincer 38 a pseudocell in box2.
Enjoy 
Ted |
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oaxen
Joined: 10 Jul 2006
Posts: 96
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| Posted: Sun Dec 06, 2009 4:27 pm Post subject: twosteppers |
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| Thank you Danny. Lately, inclusive this one, you have constructed some beautiful two-steppers where even my simplified technique has problems |
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