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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Sat Jul 31, 2010 4:49 am Post subject: Puzzle 10/07/31: A |
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| Code: | +-----------------------+
| . 9 5 | . . 2 | . . 3 |
| 2 . . | . 3 . | . . 5 |
| 3 . 6 | . . 5 | . . . |
|-------+-------+-------|
| . . . | 3 . . | . 5 . |
| . 5 . | . 4 1 | . . 6 |
| 7 . 3 | . 5 . | . 4 2 |
|-------+-------+-------|
| . . . | . . . | 5 . 9 |
| . . . | 2 . 9 | . 3 4 |
| 9 3 . | . 7 4 | 6 2 1 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Sat Jul 31, 2010 2:58 pm Post subject: |
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A one-stepper - I'm sure I am going to get its name wrong with all this "kraken" discussion!
| Quote: | kraken/almost x-wing(7)r15c48 fin (7)r1c7
r1c7<>7 then x-wing(7); r237c8<>7
r1c7=7 then (7)r1c7 - (4)r1c7=(4-9)r2c7=(9)r2c8 - (9=7)r5c8; r237c8<>7 |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Sat Jul 31, 2010 4:51 pm Post subject: |
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| peterj wrote: | A one-stepper - I'm sure I am going to get its name wrong with all this "kraken" discussion!
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Peter, that's as perfect a "Kraken" as Mike Barker ever created. |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sat Jul 31, 2010 5:23 pm Post subject: |
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Flightless skyscraper (7)r57c8 with transport: (7)r5c4-r4c6=r2c6; r2c3<>7
Kraken time again: cell (189)r6c7
(1)r6c7-r6c2=(1)r8c2; r7c13,r8c5<>1
(8)r6c7-(8=7)r8c7-(7=1)r8c3; r7c13,r8c5<>1
(9)r6c7-(9=7)r5c8-r7c8=r8c7-(7=1)r8c3; r7c13,r8c5<>1
ANP(68=9)r6c46-(9=7)r5c4-r12c4=r2c6-r2r2=r3c2-(7=8)r3c9-r12c8=r7c8-(8=7)r8c7-(7=1)r8c3-(1=6)r8c2; r6c2<>6
Ted |
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ttt
Joined: 06 Dec 2008
Posts: 42
Location: vietnam
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| Posted: Sat Jul 31, 2010 6:27 pm Post subject: |
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| peterj wrote: | | A one-stepper - I'm sure I am going to get its name wrong with all this "kraken" discussion! |
| Code: | *--------------------------------------------------------------------*
| 14 9 5 | 14678 168 2 | 478 1678 3 |
| 2 1478 147 | 14678 3 678 | 4789 16789 5 |
| 3 1478 6 | 1478 9 5 | 2 178 78 |
|----------------------+----------------------+----------------------|
| 146 146 9 | 3 2 678 | 178 5 78 |
| 8 5 2 | 79 4 1 | 3 79 6 |
| 7 16 3 | 689 5 68 | 189 4 2 |
|----------------------+----------------------+----------------------|
| 146 2 147 | 168 168 3 | 5 78 9 |
| 5 167 17 | 2 168 9 | 78 3 4 |
| 9 3 8 | 5 7 4 | 6 2 1 |
*--------------------------------------------------------------------*
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Very nice find, Peter!
At present, I don’t think that your move is named: Kraken 
We can present your move as an Almost X-wing: either (X-wing: 7’s)r15c48 or (7)r1c7 => r237c8<>7
| Code: | | (X-wing:7’s)r15c48=(7-4)r1c7=(4-9)r2c7=(9)r2c8-(9=7)r5c8 => r237c8<>7 |
ttt |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Sat Jul 31, 2010 7:08 pm Post subject: |
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| ttt wrote: | | At present, I don’t think that your move is named: Kraken |
I disagree. However, Mike Barker's edited definition and examples are more complex than I recall him originally making. My recollection is of an example almost identical to the one presented by Peter. Given MB's latest definition and examples, I can see why I haven't encountered a Kraken Fish example in some time.
Last edited by daj95376 on Sat Jul 31, 2010 10:34 pm; edited 3 times in total |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Sat Jul 31, 2010 8:18 pm Post subject: |
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| daj95376 wrote: | | ttt wrote: | | At present, I don’t think that your move is named: Kraken |
I disagree. |
I'll leave you guys to sort it out! I looked at the Sudopedia article but didn't understand the bit about secondary sets and reducing the fish to a lower order fish... |
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Luke451
Joined: 20 Apr 2008
Posts: 310
Location: Southern Northern California
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| Posted: Sun Aug 01, 2010 12:04 am Post subject: |
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Part of the problem is that the label "kraken" has been applied to so many different things. To me, "kraken fish" and "kraken unit" (kraken box/cell/column/row) are different techniques that simply share a feature.
If you want to get a better idea of what ttt and others call "kraken," check out this solution path from Eureka as just one example. ( ttt post on "15-Jan-2009 11:42 am.) |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sun Aug 01, 2010 12:35 am Post subject: |
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Here's an un-Kraken solution:
W-Wing (78)
ER (7)
X-Wing (7) |
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