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 

Set XY_03 Puzzle 043

 
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: 3854
PostPosted: Sun Oct 18, 2009 5:28 pm    Post subject: Set XY_03 Puzzle 043 Reply with quote
Doesn't need a chain.

Code:
XY puzzles can be solved using these techniques:

Basics:  Naked/Hidden Single, Naked Pair/Triple, Locked Candidates 1/2
Basics+: Naked Quad, Hidden Pair/Triple/Quad
VH:      BUG+1, UR Type 1, X-Wing, XY-Wing
VH+:     2-String Kite, Empty Rectangle, Remote Pair, Skyscraper,
         XYZ-Wing, finned X-Wing, UR Type 2/4
XY:      gM-Wing, W-Wing, XY-Chain, BUG+2, BUG+3, other URs


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

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



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Mon Oct 19, 2009 3:28 pm    Post subject: Reply with quote
Another fun puzzle; no attempt to minimize the number of moves.

Quote:
UR14 in r34c79 with x-wing 1 deletes 1 in r3c7 & r4c9,
UR 46 in r36c78 with x-wing 6 deletes 4 in r6c78
UR49 in r45c16 with strong link 4 in row5 deletes 9 in r4c6,
x-wing 3 in r59c68,
finned x-wing 8 r49c68,
Kraken x-wing 9 in r57c68 and fin in r5c1,
xy-wing 3-69 with vertex 39 in r5c8, pincer 36 in r6c7 and pincer 69 is a pseudocell in col8

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



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Mon Oct 19, 2009 11:30 pm    Post subject: Reply with quote
Type 6 UR (14), Multi-coloring (4), X-Wing (3) and XY-Wing (389).
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