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Puzzle 10/05/22: (C) Advanced

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sat May 22, 2010 1:47 pm    Post subject: Puzzle 10/05/22: (C) Advanced Reply with quote
plus XYZ-Wing alert

Code:
 +-----------------------+
 | 6 . . | . 3 . | . . . |
 | . . 7 | 4 6 1 | . . 3 |
 | . 8 . | . . . | 6 . . |
 |-------+-------+-------|
 | . 4 . | . 5 9 | . . 8 |
 | 1 6 . | 2 . . | 3 9 . |
 | . 9 . | 1 . 6 | . 4 . |
 |-------+-------+-------|
 | . . 1 | . 9 . | 7 . . |
 | . . . | . 1 7 | . . . |
 | . 7 . | 8 . . | . . 1 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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ttt



Joined: 06 Dec 2008
Posts: 42
Location: vietnam
PostPosted: Sat May 22, 2010 4:30 pm    Post subject: Reply with quote
Code:
 *--------------------------------------------------------------------*
 | 6      1      45     | 9      3      8      | 245    7      245    |
 | 259    25     7      | 4      6      1      | 589    58     3      |
 | 349    8      349    | 7      2      5      | 6      1      49     |
 |----------------------+----------------------+----------------------|
 | 7      4      2      | 3      5      9      | 1      6      8      |
 | 1      6      58     | 2      78     4      | 3      9      57     |
 | 358    9      358    | 1      78     6      | 25     4      257    |
 |----------------------+----------------------+----------------------|
 | 2458   235    1      | 56     9      23     | 7      2358   456    |
 | 24589  235    4589   | 56     1      7      | 4589   2358   4569   |
 | 259    7      6      | 8      4      23     | 59     235    1      |
 *--------------------------------------------------------------------*

Look at AUR(23)r79c68 => one of [(5)r79c8, (8)r7c8] must be true.
AUR(23)r79c68:(5)r79c8=(8)r7c8-(8=5)r2c8-(25=9)r2c12-(9)r9c1=(9)r9c7 => r9c7<>5, STTE

ttt
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Luke451



Joined: 20 Apr 2008
Posts: 310
Location: Southern Northern California
PostPosted: Sat May 22, 2010 6:12 pm    Post subject: Reply with quote
ttt, great to see you. Last I heard you were talking about "retirement," so I was worried. It's not that easy for the great ones to retire (right, Danny?)

My solution happens to be in the same neighborhood as yours, ttt.

10/05/22: (C) Advanced (SE 7.1)

1) AUR(56)r78c49 => r78c9<>5

Code:
 *--------------------------------------------------------------------*
 | 6      1      45     | 9      3      8      | 245    7      245    |
 | 259    25     7      | 4      6      1      | 589    58     3      |
 | 349    8      349    | 7      2      5      | 6      1      49     |
 |----------------------+----------------------+----------------------|
 | 7      4      2      | 3      5      9      | 1      6      8      |
 | 1      6      58     | 2      78     4      | 3      9      57     |
 | 358    9      358    | 1      78     6      | 25     4      257    |
 |----------------------+----------------------+----------------------|
 | 2458   235    1      | 56     9      23     | 7      2358   46     |
 | 24589  235    4589   | 56     1      7      | 4589   2358   469    |
 | 259    7      6      | 8      4      23     | 59     235    1      |
 *--------------------------------------------------------------------*

2) (46=9)als:r78c9-(9)r3c9=r3c13-(9=25)als:r2c12-(5=8)r2c8-r78c8=(8)r8c7
=>r8c7<>4, singles
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Sat May 22, 2010 6:43 pm    Post subject: Reply with quote
A "finned"(Almost?) xy-wing reaps sufficient destruction for a one-stepper...

finned xy-wing(459) vertex (245)r1c7, pincers (49)r3c9, (59)r9c7, (45=2)r1c7-(2=5)r6c7-(5=9)r9c7; r2c7<>9
singles
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Mon May 24, 2010 12:50 am    Post subject: Reply with quote
I can't follow the notation, but I noticed the 23 UR with the 58 pseudo cell but didn't use it.

I did use:

UR (56) with 49 pseudo cell
Type 6 UR (25)
DP (57-78-58)
W-Wing (58), flightless, with pincer transport
M-Wing (59)
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Mon May 24, 2010 1:35 am    Post subject: Reply with quote
Some puzzles should come with warning labels.

Code:
   c39   X-Wing                          <> 9    r3c1,r8c17
 
 <89+5>  XYZ-Wing r2c7/r2c8+r9c7         <> 5    r1c7

 r15     X-Wing                          <> 5    r68c3,r678c9

 r69\c17 finned  X-Wing                  <> 5    r8c7

 r79c68  <23> UR Type 3.2243             r8c8<>58

 r16c79  <25> UR Type 6.2222             r1c9,r6c7<>5
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strmckr



Joined: 18 Aug 2009
Posts: 66
PostPosted: Mon May 24, 2010 6:00 am    Post subject: Reply with quote
after singles and three 1-FISH {locked candidates}

wxyz - wing

and its all singles from there out Smile

Code:
.------------------.------------.------------------.
| 6      1    45   | 9   3   8  | 245@  7     245  |
| 259    25   7    | 4   6   1  | 58-9  58    3    |
| 349    8    349  | 7   2   5  | 6     1     49@  |
:------------------+------------+------------------:
| 7      4    2    | 3   5   9  | 1     6     8    |
| 1      6    58   | 2   78  4  | 3     9     57   |
| 358    9    358  | 1   78  6  | 25@   4     257  |
:------------------+------------+------------------:
| 2458   235  1    | 56  9   23 | 7     2358  456  |
| 24589  235  4589 | 56  1   7  | 4589  2358  4569 |
| 259    7    6    | 8   4   23 | 59@   235   1    |
'------------------'------------'------------------'
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Luke451



Joined: 20 Apr 2008
Posts: 310
Location: Southern Northern California
PostPosted: Mon May 24, 2010 6:19 am    Post subject: Reply with quote
strmckr wrote:
after singles and three 1-FISH {locked candidates}

wxyz - wing

and its all singles from there out Smile

Code:
.------------------.------------.------------------.
| 6      1    45   | 9   3   8  | 245@  7     245  |
| 259    25   7    | 4   6   1  | 58-9  58    3    |
| 349    8    349  | 7   2   5  | 6     1     49@  |
:------------------+------------+------------------:
| 7      4    2    | 3   5   9  | 1     6     8    |
| 1      6    58   | 2   78  4  | 3     9     57   |
| 358    9    358  | 1   78  6  | 25@   4     257  |
:------------------+------------+------------------:
| 2458   235  1    | 56  9   23 | 7     2358  456  |
| 24589  235  4589 | 56  1   7  | 4589  2358  4569 |
| 259    7    6    | 8   4   23 | 59@   235   1    |
'------------------'------------'------------------'

I think Peter already covered that idea, Seeker.
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Mogulmeister



Joined: 03 May 2007
Posts: 1151
PostPosted: Mon May 24, 2010 6:43 am    Post subject: Reply with quote
Well, encouraged by Wapiti's love of fish and also as we seem to have at least two almost based solutions covered, how about a little two step:

1)Finned swordfish on 5s (with fin at r9c8) which means r7c9 and r8c79 <>5
2)(25-4)r1c7=(4-9)r3c9=(9-8)r2c7=(8-4)r8c7=(4)r1c7; r1c7=4

Last edited by Mogulmeister on Mon May 24, 2010 6:47 am; edited 1 time in total
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Mon May 24, 2010 6:45 am    Post subject: Reply with quote
Quote:
I think Peter already covered that idea, Seeker.

Yes, but didn't know it had a formal name! Thanks

I have found more generic 'almost xy-wings' recently - but I can see with all the subsets in the column it is a wxyz-wing.

Continuing to learn!
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Luke451



Joined: 20 Apr 2008
Posts: 310
Location: Southern Northern California
PostPosted: Mon May 24, 2010 4:54 pm    Post subject: Reply with quote
peterj wrote:
Yes, but didn't know it had a formal name! Thanks

strmckr: Lord of the Wings!
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