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Puzzle 10/02/08 (C)

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daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Mon Feb 08, 2010 5:51 pm Post subject: Puzzle 10/02/08 (C)

Rated XY.

Code:

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

Play this puzzle online at the Daily Sudoku site

tlanglet

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

Posted: Tue Feb 09, 2010 3:41 pm Post subject:

One step.

Quote:

w-wing on 27 in r3c2 & r7c1 with grouped strong link 7 in r8c34:
(7)r8c3 = (7=2)r7c1,
(7)r8c4 - (7)r123c4 = (7)r3c6 - (7=2)r3c2.

Ted

Marty R.

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

Posted: Tue Feb 09, 2010 8:46 pm Post subject:

I played a useless XY-Wing (793) and Hidden UR (78). The W-Wing (27) wasn't enough for me to finish but the Type 1 UR (17) was. Last edited by Marty R. on Wed Feb 10, 2010 12:19 am; edited 1 time in total

tlanglet

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

Posted: Tue Feb 09, 2010 11:55 pm Post subject:

Marty R. wrote:

I played a useless XY-Wing (793) and Hidden UR (78). The W-Wing (27) wasn't enough for me to finish but the Type 1 UR (17) was.

Marty,

Was your w-wing on 27 the same as I posted?

I looked at the puzzle again. The w-wing deletes the 2 in r2c1 and r7c2 and basics completed the job.

Ted

Marty R.

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

Posted: Wed Feb 10, 2010 12:24 am Post subject:

Quote:

Was your w-wing on 27 the same as I posted?

I think so, unless another one was available in boxes 17. Mine was connected by 7s in c6.

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