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Puzzle 10/03/16 ___ BBDB as VH+

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue Mar 16, 2010 5:26 pm    Post subject: Puzzle 10/03/16 ___ BBDB as VH+ Reply with quote
Code:
 +-----------------------+
 | 4 . . | 7 . . | . . . |
 | . 7 3 | . 5 9 | . 4 . |
 | . 1 6 | . 2 . | 7 . . |
 |-------+-------+-------|
 | 6 . . | . . . | 2 7 . |
 | . 2 1 | . 9 . | 4 . . |
 | . 5 . | . . . | . . . |
 |-------+-------+-------|
 | . . 5 | 3 6 . | 9 2 4 |
 | . 3 . | 9 . . | 1 6 . |
 | . . . | . . . | 3 . 7 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Wed Mar 17, 2010 2:49 pm    Post subject: Reply with quote
Three VH steps.

Quote:
x-wing 7 in r57c16,
xy-wing -479 with vertex 79 in r6c3,
xy-wing 17-8 with vertex 17 in r7c6.

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Wed Mar 17, 2010 11:28 pm    Post subject: Reply with quote
This is embarrassing, but I had to slog through 10 steps before reducing the grid to a BUG+2.
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Thu Mar 18, 2010 12:20 am    Post subject: Reply with quote
Marty R. wrote:
This is embarrassing, but I had to slog through 10 steps before reducing the grid to a BUG+2.


Marty, nothing is really embarrassing about lots of steps. Sometimes the key step to break a puzzle is the one you miss because you spotted a different one.

The goal for me when solving Sudoku puzzles is to find "interesting" steps, not the number.

Ted
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