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daj95376
Joined: 23 Aug 2008
Posts: 3854
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 Posted: Sat Oct 16, 2010 5:22 am Post subject: Puzzle 10/10/16: B XY |
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| Code: | +-----------------------+
| . 9 3 | 4 2 6 | . 7 . |
| 7 2 . | . . . | . . . |
| 5 . . | 3 . . | . . . |
|-------+-------+-------|
| 3 . 6 | . . 4 | . 5 9 |
| 4 . . | . 8 . | . . 6 |
| 2 . . | 6 . . | 7 . 4 |
|-------+-------+-------|
| . . . | . . 9 | . . 5 |
| 6 . . | 5 . . | . . 7 |
| . . . | 8 6 7 | 4 2 . |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sat Oct 16, 2010 2:45 pm Post subject: |
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Flightless AW-wing (19)r2c4|r6c3, SL (9)r26c5 with fin (58)r6c3; r8c4=2
If w-wing is true plus transport: (1)r6c3-r78c3=(1)r8c2;r8c4<>1=2
If fin is true: LS(1458)r2369-(18=2)r8c3-r8c6=(2)r8c4
(Note: LS is for a Locked Set)
Ted |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Sat Oct 16, 2010 3:20 pm Post subject: |
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Initially found an m-wing(27) and then stumbled on a more efficient route .. two steps.
| Quote: | AIC (1=9)r2c4 - r5c4=(9-7)r5c3=(7-2)r7c3=r8c3 - (2=1)r8c6 ; r7c4<>1, r23c6<>1
kite(1) c1, r9 ; r1c9<>1 |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Sat Oct 16, 2010 3:36 pm Post subject: |
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| tlanglet wrote: | | Flightless AW-wing |
Ted, I assume you mean r7c4 not r8c4? Also I can't get your transport to work as I have a pile of 1s in b7? I also needed another step after this same elimination.
Reviewing further I see playing the UR(34) reveals the w-wing in an altogether straightforward manner and your transport works to crack the puzzle.  |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sun Oct 17, 2010 12:46 am Post subject: |
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Four steps but lots of fun.
Type 3 UR (34) with 1578 pseudo cell
XY-Wing (127)
DP 16-36-13, boxes 369, r2c8=4
Take your choice, BUG+1 or various XY-Chains |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sun Oct 17, 2010 12:47 am Post subject: |
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| peterj wrote: | | tlanglet wrote: | | Flightless AW-wing |
Ted, I assume you mean r7c4 not r8c4? Also I can't get your transport to work as I have a pile of 1s in b7? I also needed another step after this same elimination.
Reviewing further I see playing the UR(34) reveals the w-wing in an altogether straightforward manner and your transport works to crack the puzzle. |
Peter,
This is a real mess 
My posted solution does not work, period!. I woke up early this morning around 4:30 and started working on this puzzle before coffee. I enter my steos into Notepad and do not keep a copy, so I don't know everything I did but I do remember finding the UR(34) plus a couple of other moves. I suspect I got confused with the UR (34) since the two parts of my post are incompatible: the wing transport is only valid after the UR(34), but after the UR(34, the w-wing does not have a fin.
I am sorry for all the chaos and promise to not post a puzzle at 4:30 unless I have had a cup of coffee.
Ted
And in addition, I really liked finding that quad move but to no avail........ |
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