dailysudoku.com :: View topic - Puzzle 10/03/25 (B)

dailysudoku.com
Discussion of Daily Sudoku puzzles

FAQ

Memberlist

Usergroups

Profile

Puzzle 10/03/25 (B)

dailysudoku.com Forum Index -> Puzzles by daj

View previous topic :: View next topic

Author

Message

daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Thu Mar 25, 2010 9:49 pm Post subject: Puzzle 10/03/25 (B)

Code:

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

Play this puzzle online at the Daily Sudoku site

storm_norm

Joined: 18 Oct 2007
Posts: 1741

Posted: Sat Mar 27, 2010 6:55 am Post subject:

Quote:

xyz
w-wing
sky

but more fun is if you take a look at the 4's in columns 1 and 7

the way to see this is to realize that at least one of these is true...
skyscraper on 4's (r5c1 = r2c1 - r2c7 = r4c7)
the 4 in r3c1
the 4 in r1c7

just notice that if the 4's in r3c1 and r1c7 are false then the skyscraper is true and the 4 is eliminated from r5c9.

Code:

(4)skyscraper, (r5c1 = r2c1 - r2c7 = r4c7)
||
(4-8)r3c1 = (8)r2c1 - (8=4)r2c9
||
(4)r1c7 - (4=5)r1c6 - (5)r1c9 = (5-1)r4c9 = (1)r5c9

Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Mon Mar 29, 2010 1:24 am Post subject:

Same as Norm except I started with two XYZs.

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