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Puzzle 11/07/02: ~ Advanced

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sat Jul 02, 2011 4:01 pm    Post subject: Puzzle 11/07/02: ~ Advanced Reply with quote
Code:
 +-----------------------+
 | 7 6 3 | 9 . 4 | 1 . . |
 | 2 5 . | . 6 1 | 7 4 . |
 | 4 . 1 | . . . | 9 . . |
 |-------+-------+-------|
 | 1 . . | . . . | 3 9 . |
 | . 9 . | . . 3 | . . . |
 | 3 7 . | . 9 2 | 5 . . |
 |-------+-------+-------|
 | 6 1 7 | 4 . 9 | 8 3 . |
 | . 3 . | 6 . . | 2 1 . |
 | . . . | . . . | . . 9 |
 +-----------------------+

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: Mon Jul 04, 2011 7:18 pm    Post subject: Reply with quote
x-wing(4)r58c39; r45c39,r9c3<>4
xy-wing(56-7) vertex (56)r3c8; r9c6<>7
Flightless w-wing (58)r1c5|r5c1 GSL(8)r156c8 plus transport: (5)r5c1-r9c1=(5)r8c3; r8c5<>5

I intended to solve this puzzle using only "advanced" steps but could not skip this
Code:
 *-----------------------------------------------------------*
 | 7     6     3     | 9     58    4     | 1     258   28    |
 | 2     5     9     | 38    6     1     | 7     4     38    |
 | 4     8     1     | 2     35    7     | 9     56    36    |
 |-------------------+-------------------+-------------------|
 | 1     2    *58    |*57    4     6     | 3     9    *78    |
 |*58    9     6     |*57    18    3     | 4     28   *1278  |
 | 3     7     4     | 18    9     2     | 5     68    168   |
 |-------------------+-------------------+-------------------|
 | 6     1     7     | 4     2     9     | 8     3     5     |
 | 9     3    *58    | 6     7    *58    | 2     1     4     |
 |*58    4     2     | 13    13   *58    | 6     7     9     |
 *-----------------------------------------------------------*

:
10-cell Type 1 BUG-Lite+1(578): (78)r45c9|(57)r45c4|(58)r59c1| (58)r48c3|(58)r89c6; r6c9<>78 which did not complete the puzzle. Shocked

BUG+2; r12c9<>8

A more direct, one step solution is
(8=3)r2c4-r2c9=(3-6)r3c9=r3c8-(6=8)6c8; r6c4<>8=1

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Jul 09, 2011 4:55 am    Post subject: Reply with quote
XY-Wing (567); r9c6<>7
Type 6 UR (57); r3c6, r8c5=7
XY-Chain; r1c8, r3c5<>5
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