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Set H Puzzle 66

 
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Sun Jan 11, 2009 12:36 pm    Post subject: Set H Puzzle 66 Reply with quote

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

Play this puzzle online at the Daily Sudoku site

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Can be solved using steps from ...

Basics: Naked/Hidden Single, Naked Pair/Triple, Locked Candidate 1/2

Basics+: Naked Quad, Hidden Pair/Triple/Quad

VH: BUG+1, Remote Pair, UR Type 1, X-Wing, XY-Wing

Advanced: 2-String Kite, Empty Rectangle, Skyscraper, UR Type 2, XYZ-Wing

Extreme: finned X-Wing, M-Wing, W-Wing, XY-Chain

Extreme+: Swordfish, Jellyfish, (but mostly) Chain
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Marty R.



Joined: 12 Feb 2006
Posts: 5063
Location: Rochester, NY, USA

PostPosted: Mon Jan 12, 2009 12:03 am    Post subject: Reply with quote

This was either a three-stepper or four-stepper, depending on how the last step is viewed. I don't recall seeing the pattern for the last step before. The grid was pretty crowded after basics.

Quote:
XY-Wings on 564 and 475 and overlapping Type 1 URs on 17 and 19 which made eliminations from the same cell
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Mon Jan 12, 2009 2:27 am    Post subject: Reply with quote

Marty R. wrote:
I don't recall seeing the pattern for the last step before.

The pattern for the last step occurs more often than you might imagine. You played it perfectly.
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