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Set T_03 Puzzle 83 -- VH+

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Wed Apr 15, 2009 8:06 pm    Post subject: Set T_03 Puzzle 83 -- VH+ Reply with quote

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

Play this puzzle online at the Daily Sudoku site

Code:
     b8  Naked  Quad                     <> 2567 [r89c5]   -or-
   c5    Naked  Quad                     <> 3567 [r89c5]

 r19     X-Wing                          <> 5    [r68c4],[r358c7]

         turbot fish/ER  r3b5            <> 5    [r5c8]
         turbot fish/ER  r8b5            <> 5    [r6c9]          extraneous

         XY-Wing  [r1c4]/[r2c6]+[r9c4]   <> 6    [r8c6]          extraneous
         XY-Wing  [r3c8]/[r1c7]+[r5c8]   <> 2    [r2c8],[r5c7]


Last edited by daj95376 on Wed Apr 22, 2009 10:42 am; edited 2 times in total
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Thu Apr 16, 2009 11:23 pm    Post subject: Reply with quote

ok, let me see if I can duplicate Danny's path
x-wing 5
xy-wing {2,5,6} removes 6 from r8c6
xy-wing {2,5,6} removes 6 from r2c9
finned x-wing 5 removes 5 from r5c8
xy-wing {2,5,6} removes 2 from r5c7 and r2c8
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tlanglet



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

PostPosted: Fri Apr 17, 2009 12:29 am    Post subject: Reply with quote

A three step sequence:
x-wing 5,
finned x-wing 5 deletes 5 in r5c8,
xy-wing 256 with pivot 56 inr3c8 and pincers in r1c7 & r5c8

storm_norm wrote:
ok, let me see if I can duplicate Danny's path

Norm, what/where is this?

Ted
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Fri Apr 17, 2009 12:38 am    Post subject: Reply with quote

Quote:
Norm, what/where is this?

Ted,
Danny's solver/generator comes up with a solution path to these puzzles. he isn't posting that anywhere that I know of. but I think its fun sometimes to try and pinpoint the path that was found when the puzzle was generated.
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Fri Apr 17, 2009 12:56 am    Post subject: Reply with quote

storm_norm wrote:
Quote:
Norm, what/where is this?

Ted,
Danny's solver/generator comes up with a solution path to these puzzles. he isn't posting that anywhere that I know of. but I think its fun sometimes to try and pinpoint the path that was found when the puzzle was generated.

Ted & Norm:

My solver produces a solution path that I manually edit to see what can be trimmed/reordered. I also use HoDoKu to look for alternate endings for puzzles where my solver has chosen an XY-Chain.

I've recently gone back and added my edited solution to the head post of puzzles a week or more old. This is a FYI for those who may be curious.

Norm is in the ballpark! And Ted hit the home run!!!

Regards, Danny

BTW: I appreciate the positive feedback on my puzzles Exclamation
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