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Puzzle 10/09/08: A2 VH

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Wed Sep 08, 2010 2:11 am    Post subject: Puzzle 10/09/08: A2 VH Reply with quote
Last pair of VH-rated puzzles. They have a limited number of technique choices and my generator heavily favors XY-Wings. Forcing me to scan a large number of puzzles hoping to find some variety. Expect turbot/VH+ rated puzzles to replace them.

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

Play this puzzle online at the Daily Sudoku site


===== ===== ===== ===== Ratings are Accumulative in Techniques ===== ===== =====

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

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

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

turbot:    2-String Kite, Skyscraper, Empty Rectangle, finned/Sashimi X-Wing
VH+:       Remote Pair, XYZ-Wing, UR Type 2/4
Advanced:  turbot and VH+

XY:        gM-Wing, W-Wing, XY-Chain, BUG+2, BUG+3, other URs

Extreme:   Chain, Loop, SIN (Single Inference Network)
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JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
PostPosted: Wed Sep 08, 2010 9:09 am    Post subject: Reply with quote
Quote:
XY Wing (-359), pivot at R5C9 : => r6c4<>3
XY Wing (2-39), pivot at R6C4 : => r9c5<>3
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