dailysudoku.com Forum Index dailysudoku.com
Discussion of Daily Sudoku puzzles
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Puzzle 11/06/28: ~ XY

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Puzzles by daj
View previous topic :: View next topic  
Author Message
daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Tue Jun 28, 2011 2:00 am    Post subject: Puzzle 11/06/28: ~ XY Reply with quote

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

Play this puzzle online at the Daily Sudoku site
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5160
Location: Rochester, NY, USA

PostPosted: Wed Jun 29, 2011 4:50 am    Post subject: Reply with quote

AIC; r2c5<>5
W-Wing (49); r2c9<>4
Coloring; r9c8<>5
XY-Wing (674), flightless with transport; r3c4<>4
Back to top
View user's profile Send private message
tlanglet



Joined: 17 Oct 2007
Posts: 2461
Location: Northern California Foothills

PostPosted: Wed Jun 29, 2011 2:13 pm    Post subject: Reply with quote

A fun, interesting puzzle that did not readily match my bag of moves but I had an unusual step.

(5=6)r8c2-r12c2=r1c3-(6=9)r1c9-r3c7=r7c7-(9=5)r7c5; r8c56<>5
Multi-coloring (5);r2c5,r7c7,r9c6<>5

Probably a reasonable way to describe this next move, but it is not immediately obvious to me.

Code:
 *--------------------------------------------------*
 | 2    4    56   | 3    7    569  | 8    1    69   |
 | 8    569  7    | 2    49   1    | 3    45   69   |
 | 3    59-6 1    | 46   8    59-6 | 45   2    7    |
 |----------------+----------------+----------------|
 | 7    8    9    | 5    6    4    | 1    3    2    |
 | 6    1    4    | 9    2    3    | 7    8    5    |
 | 5    3    2    | 7    1    8    | 6    9    4    |
 |----------------+----------------+----------------|
 | 4    7    3    | 8    5    2    | 9    6    1    |
 | 1    56   8    | 46   49   679  | 2    57   3    |
 | 9    2    56   | 1    3    67   | 45   457  8    |
 *--------------------------------------------------*


axy-wing (49-6) vertex (49)r2c5 and fin(5)r2c2
If the xy-wing is true; then r3c2<>6. Plus transport: (6)r2c2-(6=5)r1c3-r1c6=(5-6)r3c6 for two deletions.
If fin is true: (5)r2c2-(5=6)r8c2*-r9c3=(6)r9c6; r3c26<>6 for the same two deletions as the xy-wing which makes r3c4=6 to complete the puzzle.

Ted
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5160
Location: Rochester, NY, USA

PostPosted: Wed Jun 29, 2011 7:21 pm    Post subject: Reply with quote

Ted,

Just for laughs, there's what I think is an AIC. The 5 in r9c3 proves a 6 in r8c4; r8c2<>6.
Back to top
View user's profile Send private message
peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK

PostPosted: Thu Jun 30, 2011 7:23 am    Post subject: Reply with quote

Looked for a long time for some MUG/DP/Oddagon but gave up! Three steps...
Code:
turbot/er(5) (5)r2c8=r3c7 - r7c7=r7c4 ; r2c5<>5
w-wing(49) (4=9)r2c5 r1c6=r1c9 - (9=4)r6c9 ; r2c9<>4
xy-chain ; (5=4)r2c8 - (4=9)r2c5 - (9=4)r8c5 - (4=6)r8c4 - (6=5)r8c2 ; r2c2<>5, r8c8<>5
Back to top
View user's profile Send private message
JC Van Hay



Joined: 13 Jun 2010
Posts: 369
Location: Charleroi, Belgium

PostPosted: Thu Jun 30, 2011 12:17 pm    Post subject: Reply with quote

6r9c3=6r9c6-6r8c4=(6-4)r3c4=4r3c7-(4=5)r9c7 => -5r9c3
Kite 5R7C8 => -5r2c5
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Puzzles by daj All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group