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Puzzle NR_048

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Thu Jun 25, 2009 6:49 pm    Post subject: Puzzle NR_048 Reply with quote
Code:
 +-----------------------+
 | 9 . . | 4 . . | . . . |
 | . 4 . | 9 . . | . 5 6 |
 | . . 5 | . . . | . 3 4 |
 |-------+-------+-------|
 | 5 1 . | . . . | . 4 3 |
 | . . . | . 7 . | 1 . . |
 | . . . | . . 1 | 8 . 9 |
 |-------+-------+-------|
 | . . . | . 8 5 | . . . |
 | . 9 8 | 1 . . | . . 7 |
 | . 5 3 | 7 . 9 | . 1 . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Thu Jun 25, 2009 7:39 pm    Post subject: Reply with quote
Code:
.------------------.------------------.------------------.
| 9     236   26   | 4     5    *2367 | 27    8     1    |
| 1378  4     12   | 9    *13   *2378 | 27    5     6    |
|-178   268   5    | 28   *16    2678 | 9     3     4    |
:------------------+------------------+------------------:
| 5     1     7    | 28    9     28   | 6     4     3    |
|*48    68    9    | 3     7    *46   | 1     2     5    |
| 34    236   246  | 5     46    1    | 8     7     9    |
:------------------+------------------+------------------:
|*14    7     14   | 6     8     5    | 3     9     2    |
| 2     9     8    | 1     34   *34   | 5     6     7    |
| 6     5     3    | 7     2     9    | 4     1     8    |
'------------------'------------------'------------------'

(1=4)r7c1 - (4)r5c1 = (4)r5c6 - (4=3)r8c6 - (3)r12c6 = (3-1)r2c5 = (1)r3c5; r3c1 <> 1
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Thu Jun 25, 2009 8:23 pm    Post subject: Reply with quote
(1=4)r7c1 - (4)r5c1 = (4)r5c6 - (4=6)r6c5 - (6=1)r3c5; r3c1 <> 1

Or add cell [r5c2] and make a 6-cell XY-Chain out of it.

(1=4)r7c1 - (4=8)r5c1 - (8=6)r5c2 - (6=4)r5c6 - (4=6)r6c5 - (6=1)r3c5; r3c1 <> 1
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Thu Jun 25, 2009 10:29 pm    Post subject: Reply with quote
daj95376 wrote:
(1=4)r7c1 - (4)r5c1 = (4)r5c6 - (4=6)r6c5 - (6=1)r3c5; r3c1 <> 1

Or add cell [r5c2] and make a 6-cell XY-Chain out of it.

(1=4)r7c1 - (4=8)r5c1 - (8=6)r5c2 - (6=4)r5c6 - (4=6)r6c5 - (6=1)r3c5; r3c1 <> 1


very nice. that first chain is definitely a shorter alternative to what I saw.
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