dailysudoku.com :: View topic - vanhegan fiendish 12-10-2010

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vanhegan fiendish 12-10-2010

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storm_norm

Joined: 18 Oct 2007
Posts: 1741

Posted: Sat Dec 11, 2010 11:12 pm Post subject: vanhegan fiendish 12-10-2010

706000000201006907050720001000900070004802100020001000300094010107500309000000804

Code:

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

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tlanglet

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

Posted: Sun Dec 12, 2010 12:40 am Post subject:

Two solutions

Quote:

xy-wing -389 vertex r3c3; r2c45<>3
Then either coloring 5 or BUG+1 that forces r5c8=5 completes the puzzle.

or a one stepper..

AXY-wing: 5-69 with vertex (59)r9c1, pincers (69)r5c1 & (56)r9c8 with fin (5)r5c1; r5c8<>6
xy-wing 569 = (5)r5c1-(9)r5c1=(9)5c8; r5c8<>6

Ted

peterj

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

Posted: Sun Dec 12, 2010 10:33 am Post subject:

A trusty m-wing...

Quote:

m-wing(69) ; (9=6)r9c2 - r9c8=(6-9)r5c8=r5c1 ; r9c1<>9

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