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Puzzle 11/07/15: ~ Advanced

 
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Fri Jul 15, 2011 5:44 pm    Post subject: Puzzle 11/07/15: ~ Advanced Reply with quote

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

Play this puzzle online at the Daily Sudoku site
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tlanglet



Joined: 17 Oct 2007
Posts: 2461
Location: Northern California Foothills

PostPosted: Sat Jul 16, 2011 9:26 pm    Post subject: Reply with quote

Sometimes I like to try new techniques on less challenging puzzles. It may be heavy-handed but it is a learning opportunity and is fun.

Code after basics:
Code:
 *-----------------------------------------------------------*
 | 7     2     5     | 1     6     39    |#349   8     349   |
 | 3     9     4     | 5     2     8     | 7     6     1     |
 | 8     1     6     | 39    4     7     |-359   2     359   |
 |-------------------+-------------------+-------------------|
 | 4     5     29    | 239   7     6     |*239   1     8     |
 | 6     8     1     | 239   5     39    |*2349  34-9  7     |
 | 29    3     7     | 4     8     1     |*259  @59    6     |
 |-------------------+-------------------+-------------------|
 | 29    6     239   | 8     39    45    | 1     7     45    |
 | 5     4     8     | 7     1     2     | 6     39    39    |
 | 1     7     39    | 6     39    45    | 8     45    2     |
 *-----------------------------------------------------------*



Almost Sue de Coq (23459) b6c7, marked *
ab=(34)r1c7 with fin (9)r1c7, marked #
cd=(59)r6c8, marked @
e=(2)r56c7
SdC(23459); r3c7<>3, r5c8<>9
If fin is true: (9)r1c7-r13c9=r8c9-(9=3)r8c8-r5c8=r45c7; r3c7<>3
If fin is true: (9)r1c7-r1c6=r5c6; r5c8<>9

A kite (3) with pivot in b5 completes the puzzle.

Ted
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Marty R.



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

PostPosted: Tue Jul 19, 2011 4:43 am    Post subject: Reply with quote

I think I butchered this thing, using a Type 1, Type 4, Finned X-Wing and XY-Chain.
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Tue Jul 19, 2011 3:21 pm    Post subject: Reply with quote

Marty, here's my solver's solution.

Code:
 r79c35  <39> UR Type 1.2223             <> 39   r7c3

 r4c6    2-String Kite                   <> 3    r1c7

 <34+9>  XYZ-Wing r1c9/r1c7+r8c9         <> 9    r3c9    excessive

 r45c47  <23> UR Type 4.2233             <> 3    r5c47

   c47   X-Wing                          <> 3    r3c9

Note: the XYZ-Wing can be ignored and replaced by an XY-Wing after the X-Wing.

Regards, Danny
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Marty R.



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

PostPosted: Tue Jul 19, 2011 3:38 pm    Post subject: Reply with quote

That makes me feel better about my four moves.
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