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Puzzle 10/07/27: B

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue Jul 27, 2010 4:07 am    Post subject: Puzzle 10/07/27: B Reply with quote
Code:
 +-----------------------+
 | . 3 1 | 5 . . | . . . |
 | 4 . . | . 9 . | 3 . . |
 | 2 . 8 | . . . | . 1 . |
 |-------+-------+-------|
 | 6 . . | 2 . 1 | . 9 . |
 | . 9 . | . . 6 | 2 . . |
 | . . . | 9 4 5 | . 3 . |
 |-------+-------+-------|
 | . 4 . | . 3 . | 5 . . |
 | . . 9 | 6 . 4 | . 8 3 |
 | . . . | . . . | . 6 . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site

Rating wrote:
XY
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Tue Jul 27, 2010 10:18 pm    Post subject: Reply with quote
I seem to wonder around somewhat on this puzzle and assume some steps were not useful.

x-wing (1)r57c19; r68c1,r6c9<>1

x-wing (5)r34c29; r25c9<>5

Kraken cell (579)r3c9
(5)r3c9-(5=7)r3c2--r2c3=r9c3-r8c1=(7)r8c7; r1c7<>7
(7)r3c9; r1c7<>7
(9)r3c9-(9=7)r3c7; r1c7<>7

ANP(57=2)r2c38-(2=7)r7c8-r8c7=r8c1-r9c3=(7)r2c3; r2c69<>7

This gives us the following code.
Code:
*-----------------------------------------------------------*
 | 9     3     1     | 5     2     7     |*68    4    *68    |
 | 4     6     57    | 1     9     8     | 3     57    2     |
 | 2     57    8     | 4     6     3     | 79    1     59    |
 |-------------------+-------------------+-------------------|
 | 6     578   3     | 2     78    1     | 478   9     45    |
 | 1578  9     4     | 3     78    6     | 2     5-7  #178   |
 | 78    178   2     | 9     4     5     |*1678  3    *678   |
 |-------------------+-------------------+-------------------|
 | 18    4     6     | 78    3     9     | 5     2     17    |
 | 57    2     9     | 6     15    4     | 17    8     3     |
 | 3     18    57    | 78    15    2     | 49    6     49    |
 *-----------------------------------------------------------*


Now combine the resultant pseudocell (17) from the AUR (68)r16c79, marked *, with the (178)r5c9, marked #, to form a ANP(17=8)r5c9|r6c79.
ANP[(AUR68(17)r16c79|(17)r5c9=(8)r5c9]-(8=7)r5c5; r5c8<>7

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Wed Jul 28, 2010 4:12 am    Post subject: Reply with quote
Hidden UR (29)
X-Wing (1)
W-Wing (57), flightless with pincer transport
Type 3 UR (68) creates pincer situation
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Wed Jul 28, 2010 6:33 am    Post subject: Reply with quote
Three fun moves

gm-wing(57) (7=5)r5c8 - r5c1=(5-7)r8c1=r8c7; r7c8<>7, r46c7<>7
type 4 UR(68) r16c79 ; r6c79<>8
kite(7)(7)r2c8=r2c3 - r3c2=r4c2 transport - r4c5=r5c5 ; r5c8<>7
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