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Puzzle 10/08/25: A

dailysudoku.com Forum Index -> Puzzles by daj

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daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Wed Aug 25, 2010 4:26 am Post subject: Puzzle 10/08/25: A

Code:

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

Play this puzzle online at the Daily Sudoku site

JC Van Hay

Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium

Posted: Wed Aug 25, 2010 8:58 am Post subject:

Quote:

X Wing on 8 : (8)R36/c15 : => r25c15<>8
XY Wing (3-79) : (73)R2C1 (39)R2C5 (97)R5C5 : => r5c1<>7

peterj

Joined: 26 Mar 2010
Posts: 974
Location: London, UK

Posted: Wed Aug 25, 2010 9:30 am Post subject:

Two VH steps..

Quote:

x-wing(8)
xy-wing(39-7) r2c5 ; r5c1<>7

or a fun m-wing!

Quote:

m-wing(38) with triple (859=3)r2c56|r3c4 - r2c1=(3-8)r6c1=r6c5 ; r3c5<>8

tlanglet

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

Posted: Wed Aug 25, 2010 9:02 pm Post subject:

Today I decided to practice AHT()s so ...........

Code:

AHT[(789)r5c156=(4)r5c1]-(4=8)r3c1-(8=5)r2c3-(5=8)r5c3-(8=9)r5c6; r5c78<>9
\ \
\ \
\ R6C1<>8---------------(48=37)R6C12-(7)R5C2; R5C2<>7
\ /
R6C12<>4----------------------------------/

AHT[(589)r2c356=(3)r2c5]-r2c1=r6c1-(3)r6c2*|r6c78=(49)r6c78-(34=7)r6c2*-r2c2=(7-8)r2c1; r2c1<>8

AHT[(589)r2c6|r3c45=(4)r3c5]-(4=8)r3c1-r56c1=r5c3-r5c56=r6c5; r2c5<>8

At this point I could not find additional useful AH(PTQ) but an AIC did the deed.
(9=8)r5c6-(8=7)r6c5-r5c5=r5c1-(7=3)r2c1-(3=9)r2c5; r5c5<>9

Ted

[Sorry about the first part of this post. The preview displays it fine but when it is submitted, most of the right portion of the display is lost.]

Marty R.

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

Posted: Thu Aug 26, 2010 12:57 am Post subject:

Same as JC and Peter except I first played the Type 1 UR on 16 which obviously wasn't needed.

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