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Puzzle 11/07/19: ~ Advanced

 
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Tue Jul 19, 2011 10:58 pm    Post subject: Puzzle 11/07/19: ~ Advanced Reply with quote

Code:
 +-----------------------+
 | . 2 5 | 6 . . | 3 . . |
 | 9 . . | 2 5 . | . . . |
 | 6 . 1 | 3 4 . | 2 . . |
 |-------+-------+-------|
 | 5 4 6 | 9 8 . | 7 2 . |
 | . 9 8 | 7 . . | . 4 . |
 | . . . | . . . | . . . |
 |-------+-------+-------|
 | 2 . 3 | 8 . . | 9 . . |
 | . . . | 5 7 . | . . 2 |
 | . . . | . . . | . 5 . |
 +-----------------------+

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: Wed Jul 20, 2011 3:02 am    Post subject: Reply with quote

I found a fun two step solution assuming I truly understand the info provided by Keith and Asellus.

Code:
 *--------------------------------------------------------------------*
 | 478    2      5      | 6      19     1789   | 3      1789   14789  |
 | 9      3      47     | 2      5      178    | 1468   1678   14678  |
 | 6      78     1      | 3      4      789    | 2      789    5      |
 |----------------------+----------------------+----------------------|
 | 5      4      6      | 9      8      13     | 7      2      13     |
 | 13     9      8      | 7      1236   12356  | 156    4      136    |
 | 137    17     2      | 14     136    13456  | 1568   13689  13689  |
 |----------------------+----------------------+----------------------|
 | 2      5      3      | 8      16     146    | 9      17     147    |
 | 148    168    49     | 5      7      39     | 1468   1368   2      |
 | 1478   1678   479    | 14     239    239    | 1468   5      13468  |
 *--------------------------------------------------------------------*


#1: Almost Sue de Coq (12369)b8c5; r9c6<>9*, r1c5<>1
ab=(126)r56c5 with fin (3)r56c5
cd=(39)r8c6
If SdC is true: r1c5<>1, r9c6<>39
If fin is true: (3)r56c5-r4c6=r4c9-r9c9=r8c8-(3=*9)r8c6-r13c6=(9-1)r1c5;

#2: (1)r7c5=(1)r6c5-(1=4)r6c4-aur(56)r56c67[(4)r6c6=(8)r6c7]-(8=6)r6c8=(6=18)r2c86-(1)r2c7=r89c7; r7c8<>1=7

[Edit:I returned to this puzzle looking for another solution and found an almost skyscraper that matched the resultant code of the almost SdC even though the two steps had different initial deletions. Interesting but maybe not surprising......

almost skyscraper(3)r6c58 with fin(3)r5c5; r9c9<>3
If fin is true (3)r5c5-r4c6=r4c9;]

Ted
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susume



Joined: 13 May 2011
Posts: 36
Location: Southeastern US

PostPosted: Fri Jul 22, 2011 2:56 am    Post subject: Reply with quote

coloring (or turbot fish or whatever it's called): (3)r4c6=r4c9-r9c9=r8c8 => r8c6<>3=9
After which:
Code:
+--------+-----------+--------------+
| 4 2  5 | 6  9  18  | 3    178 78  |
| 9 3  7 | 2  5  18  | 1468 168 468 |
| 6 8  1 | 3  4  7   | 2    9   5   |
+--------+-----------+--------------+
| 5 4  6 | 9  8  3   | 7    2   1   |
| 1 9  8 | 7  2  56  | 56   4   3   |
| 3 7  2 | 14 16 456 | 568  68  9   |
+--------+-----------+--------------+
| 2 5  3 | 8  16 46  | 9    17  47  |
| 8 16 4 | 5  7  9   | 16   3   2   |
| 7 16 9 | 14 3  2   | 1468 5   468 |
+--------+-----------+--------------+

(8=7)r1c9-[UR18 (7=6)r12c8]-(6=8)r6c8 => r12c8<>8
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Marty R.



Joined: 12 Feb 2006
Posts: 5166
Location: Rochester, NY, USA

PostPosted: Sat Jul 23, 2011 4:24 am    Post subject: Reply with quote

Skyscraper; r6c8, r9c9<>3
Type 3 UR (56-56-564-568); the 8 proves a 4 in r7c9, creating pincers; r7c6<>4
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