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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Tue Jan 20, 2009 5:03 pm Post subject: Set J Puzzle 6 |
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| Code: | +-----------------------+
| 8 . 4 | . . . | 1 . . |
| . 2 3 | . . 1 | . 5 . |
| 1 6 5 | . 8 . | . . . |
|-------+-------+-------|
| . . . | 8 3 . | . 1 . |
| . . 9 | 2 . . | . 8 . |
| . 1 . | . . 9 | 7 . . |
|-------+-------+-------|
| 3 . . | . . 8 | 9 . . |
| . 9 . | 3 6 . | . . 1 |
| . . . | . . . | . 6 3 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site
===== ===== ===== ===== ===== ===== ===== ===== ===== ===== ===== ===== =====
Can be solved using steps from ...
Basics: Naked/Hidden Single, Naked Pair/Triple, Locked Candidate 1/2
Basics+: Naked Quad, Hidden Pair/Triple/Quad
VH: BUG+1, Remote Pair, UR Type 1, X-Wing, XY-Wing
Advanced: 2-String Kite, Empty Rectangle, Skyscraper, UR Type 2, XYZ-Wing
Extreme: finned X-Wing, Multiple Colors, M-Wing, W-Wing, XY-Chain
VH+AE: multi-step VH plus one Advanced and one Extreme step.
Extreme+: Swordfish, Jellyfish, (but mostly) Chain |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Wed Jan 21, 2009 6:41 am Post subject: |
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| Code: | .---------------------.---------------------.---------------------.
| 8 7 4 | 569 259 3 | 1 29 26 |
| 9 2 3 | 467 47 1 | 46 5 8 |
| 1 6 5 | 49 8 24 | 3 2479 47 |
:---------------------+---------------------+---------------------:
| 24567 45 27 | 8 3 67 | 2456 1 9 |
| 4567 3 9 | 2 1 67 | 456 8 45 |
| 26 1 8 | 45 45 9 | 7 3 26 |
:---------------------+---------------------+---------------------:
| 3 45 6 | 1 247 8 | 9 247 457 |
| 2457 9 27 | 3 6 245 | 8 247 1 |
| 2457 8 1 | 479 2479 245 | 245 6 3 |
'---------------------'---------------------'---------------------' |
(2)... r9c7 = r4c7 - r6c9 = r6c1; r9c1 <> 2
(5)... r4c2 = r7c2 - r7c9 = r5c9; r4c7 <> 5
(2)... r9c7 = r7c8 - r3c8 = r3c6; r9c6 <> 2
w-wing {4,5}... (4=5)r4c2 - (5)r7c2 = (5)r7c9 - (5=4)r5c9; r4c7 <> 4
xy-wing {4,5,9} columns 4 and 5, removes 4 from r6c4 and r2c5 and finishes it. |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Wed Jan 21, 2009 8:06 am Post subject: |
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XY: 2-67
XYZ: -456
SS: 2
XYZ: -457
SS: 5
SS: 2
XY: -459
Whew!
Keith |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Tue Jan 27, 2009 4:53 pm Post subject: |
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| I used seven steps, including XYZ, XY, Ws, ERs and finished with the same XY-Wing as Norm and Keith. I don't know what Keith's "SS" stands for. |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Tue Jan 27, 2009 5:14 pm Post subject: |
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| Marty R. wrote: | | I don't know what Keith's "SS" stands for. |
I'm putting my $$$ on Skyscraper. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Tue Jan 27, 2009 5:57 pm Post subject: |
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| daj95376 wrote: | | Marty R. wrote: | | I don't know what Keith's "SS" stands for. |
I'm putting my $$$ on Skyscraper. |
Sounds likely. |
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wapati
Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.
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| Posted: Tue Jan 27, 2009 6:00 pm Post subject: |
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I did this one with a skyscraper on 2s, which sets up an xy-wing on 459.
Last, one more skyscraper on 2s. |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Wed Jan 28, 2009 1:02 am Post subject: |
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I was stuck in an ER rut 
Three ERs on <2> and then a xy-wing459 did the trick.
Ted |
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