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Daily Sudoku for 14/12/2018 - Diabolical

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Clement

Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania

Posted: Fri Dec 14, 2018 9:12 am Post subject: Daily Sudoku for 14/12/2018 - Diabolical

Code:

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

Play this puzzle online at the Daily Sudoku site

arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Fri Dec 14, 2018 10:06 pm Post subject:

Code:

*--------------------------------------------------------------------*
|a138 9 6 |a58 4 7 | 2 a18 35 |
| 5 2348 23 | 2689 1 2689 | 37 4789 34679 |
| 1248 1248 7 | 25689 3 25689 | 45 1489 4569 |
*----------------------+----------------------+----------------------|
| 6-3 5 4 |b378 26 b38 | 1 279 279 |
| 7 36 9 | 1 26 345 | 45 24 8 |
| 12 12 8 |b57 9 45 | 6 3 457 |
*----------------------+----------------------+----------------------|
| 68 678 1 | 236 5 236 | 9 247 2347 |
| 46 467 23 | 2369 8 2369 | 37 5 1 |
| 9 23 5 | 4 7 1 | 8 6 23 |
*--------------------------------------------------------------------*
[(3=5)r1c148-(5=3)b5p137]-3r4c1; ste

immpy

Joined: 06 May 2017
Posts: 574

Posted: Sat Dec 15, 2018 2:22 pm Post subject:

SUPERB PUZZLE Clement!! And indeed diabolical; I lost count on the steps I needed. Every tool in the tool-kit was needed at some point. Kudos to arkietech for his elegant solution.

Clement

Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania

Posted: Sat Dec 15, 2018 3:25 pm Post subject: Daily Sudoku for 14/12/2018 - VH

Code:

+---------------------+-----------------------+----------------------+
|e138 9 6 | 8-5 4 7 | 2 18 f35 |
| 5 2348 23 | 2689 1 2689 | 37 4789 34679 |
| 1248 1248 7 | 25689 3 25689 | 45 1489 4569 |
+---------------------+-----------------------+----------------------+
|d36 5 4 | 678 26 38 | 1 279 279 |
| 7 c36 9 | 1 c26 345 |b45 b24 8 |
| 12 12 8 | a57 9 45 | 6 3 b47-5 |
+---------------------+-----------------------+----------------------+
| 68 678 1 | 236 5 236 | 9 247 2347 |
| 46 467 23 | 2369 8 2369 | 37 5 1 |
| 9 23 5 | 4 7 1 | 8 6 23 |
+---------------------+-----------------------+----------------------+

(5=7)r6c4 - (7=452)r5c78|r6c9 - (2=63)r5c25 - (3)r4c1 = r1c1 - (3=5)r1c9 => -5r1c4, r6c9; stte

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