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 10/04/15 ___ Chain (last one in file)

 
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: Thu Apr 15, 2010 1:50 pm    Post subject: Puzzle 10/04/15 ___ Chain (last one in file) Reply with quote
For those who like a chain after basics ... plus difficult non-chain step(s).

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

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



Joined: 03 May 2007
Posts: 1151
PostPosted: Thu Apr 15, 2010 3:00 pm    Post subject: Double Chain Reply with quote
Quote:
1.XY chain (long!) pincers r1c1 and r4c6 removing 2 at r1c6
2.XY chain pincers r7c3 and r4c6 removing 6 at r4c3
Back to top
View user's profile Send private message
tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Fri Apr 16, 2010 1:58 am    Post subject: Reply with quote
Two steps.

Quote:
Kraken xyz_wing567 in r7c1
(5)r7c1 - (5=7)r9c1; r7c2<>7
||
(6)r7c1 - r7c3 = r4c3 - (6=2)r4c6 - r1c6 = r1c1 - (2=7)r3c2; r7c2<>7
||
(7)r7c1; r7c2<>7,

ALS568[(5)r56c1 = (6)r5c1]r56c1 - r5c6 = r4c6 - (6=9)r4c3 - (9=8)r4c5 - (8=4)r2c5 - (4=7)r7c5 - (7=5)r9c4; r9c1<>5.

Ted
Back to top
View user's profile Send private message
oaxen



Joined: 10 Jul 2006
Posts: 96
PostPosted: Sat Apr 17, 2010 6:13 pm    Post subject: Reply with quote
Best puzzle for a while!
I couldn't find a bivalue opening to make it a one stepper
Back to top
View user's profile Send private message Visit poster's website
peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Sat Apr 17, 2010 7:08 pm    Post subject: Reply with quote
A different starting (long) chain to mogul and then I think the same finish (couldn't find anything quicker - though initially I coloured and found a couple of xy-wings)

Quote:
xy-chain: (7=4)r7c5-(4=8)r2c5-(8=9)r4c5-(9=6)r4c3-(6=2)r4c6-(2=1)r1c6-(1=7)r1c9-(7=2)r1c2-(2=7)r3c2; r7c2<>7
xy-chain: (6=1)r7c3-(1=5)r7c2-(5=3)r7c6-(3=2)r3c6-(2=6)r4c6; r4c3<>6
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