dailysudoku.com :: View topic

dailysudoku.com
Discussion of Daily Sudoku puzzles

FAQ

Memberlist

Usergroups

Profile

Puzzle NR_052

dailysudoku.com Forum Index -> Puzzles by daj

View previous topic :: View next topic

Author

Message

daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Tue Jun 30, 2009 8:53 am Post subject: Puzzle NR_052

Code:

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

Play this puzzle online at the Daily Sudoku site

arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Tue Jun 30, 2009 3:59 pm Post subject:

Took me three steps:

Quote:

x-wing 1
xyz-wing 198
bug+1

tlanglet

Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

Posted: Tue Jun 30, 2009 5:50 pm Post subject:

I took the grand tour on this puzzle: five steps.

Quote:

Type 3 UR 17 r79c17 forms subset 89 to delete 8 in r8c7,
an extended xy-wing 17-8 with pivot 17 inr6c4 and strong link 3 in row6,
xyz-wing 168 in r9c4,
x-wing 1 r68c47,
BUG+1 sets r9c8=1

Ted

storm_norm

Joined: 18 Oct 2007
Posts: 1741

Posted: Tue Jun 30, 2009 9:39 pm Post subject:

Code:

.------------------.------------------.------------------.
| 4 6 2 | 5 1 3 | 89 7 89 |
| 3 8 5 | 69 69 7 | 4 2 1 |
| 9 1 7 | 4 8 2 | 3 5 6 |
:------------------+------------------+------------------:
| 2 5 1 | 3 49 W48 | 6 W89 7 |
| 6 37 4 | 1789 2 W18 | 5 -189 389 |
| 8 37 9 |*17 5 6 |*12 4 23 |
:------------------+------------------+------------------:
| 17 9 68 | 2 *36 5 | 178 W138 4 |
| 5 4 3 |*18 7 9 | 128 6 28 |
| 17 2 68 |*168 346 148 | 1789 1389 5 |
'------------------'------------------'------------------'

the cells marked "W" above would be a w-wing if the 3 in r7c8 is false.

{w-wing[(1=8)r5c6 - (8)r4c6 = (8)r4c8 - (8=1)]} = (3)r7c8 - (3=6)r7c5 - (6)r9c4 = (18)r89c4 - (1)r6c4 = (1)r6c7; r5c8 <> 1

Last edited by storm_norm on Wed Jul 01, 2009 2:14 am; edited 1 time in total

tlanglet

Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

Posted: Wed Jul 01, 2009 12:38 am Post subject:

That was some "nifty" footwork Norm Ted

Display posts from previous:

	dailysudoku.com Forum Index -> Puzzles by daj	All times are GMT
Page 1 of 1

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