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Puzzle 10/10/09: C XY

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sat Oct 09, 2010 6:21 am    Post subject: Puzzle 10/10/09: C XY Reply with quote
Code:
 +-----------------------+
 | 3 . . | 5 6 . | . . . |
 | . 7 6 | . . . | . . . |
 | . 2 1 | 7 9 . | 6 . . |
 |-------+-------+-------|
 | 6 . 7 | 2 3 1 | 9 . . |
 | 9 . 2 | 8 . 6 | . 3 . |
 | . . . | 9 7 . | . . . |
 |-------+-------+-------|
 | . . 5 | 6 . . | 3 9 . |
 | . . . | . 5 . | 8 . 6 |
 | . . . | . . . | . 5 7 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Sat Oct 09, 2010 12:31 pm    Post subject: Reply with quote
Three steps
Quote:
sashimi x-wing(4) r2, r8 ; r9c1<>4
xy-wing(48-1) r2c1 ; 9c4<>1
m-wing(12) ; (1=2)r6c7 - r9c7=(2-1)r9c5=r9c1 ; r6c1<>1
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Sun Oct 10, 2010 9:17 pm    Post subject: Reply with quote
Two ADP steps.....

AUR(49)r18c23 External SIS: r2c1=4,r8c4=4
[(4)r2c1=(4)r8c4]; r2c4<>4

The resultant code is:
Code:
*--------------------------------------------------*
 | 3    89   89   | 5    6    2    | 14   7    14   |
 | 4    7    6    | 1    8    3    | 5    2    9    |
 | 5    2    1    | 7    9    4    | 6    8    3    |
 |----------------+----------------+----------------|
 | 6    58   7    | 2    3    1    | 9    4    58   |
 | 9    15   2    | 8    4    6    | 7    3    15   |
 | 18   34   34   | 9    7    5    | 12   6    128  |
 |----------------+----------------+----------------|
 | 7    14   5    | 6    12   8    | 3    9    24   |
 | 2    349  349  | 34   5    7    | 8    1    6    |
 | 18   6    348  | 34   12   9    | 24   5    7    |
 *--------------------------------------------------*

which offers a BUG-Lite+2 (34)r689c345 Internal SIS: r8c2=9,r9c3=8; r1c3<>8
(9)r8c2-(9=8)r1c2;
||
(8)r9c3;

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sun Oct 10, 2010 10:30 pm    Post subject: Reply with quote
OMG, I used 1/2 fewer steps than Peter!! Exclamation

The 49 UR in boxes 17, both DP killers forced box 2.

XY-Wing (241), pivot r7c9, flightless with pincer transport, r6c1<>1
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peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK
PostPosted: Mon Oct 11, 2010 6:38 pm    Post subject: Reply with quote
Marty, I'll have to up my game Very Happy
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Mon Oct 11, 2010 10:38 pm    Post subject: Reply with quote
peterj wrote:
Marty, I'll have to up my game Very Happy

I'd be pretty embarrassed if I were you. Wink
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