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Daily Telegraph Fri, 8-Nov-2013 Diabolical

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Clement

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

Posted: Mon Nov 11, 2013 10:33 pm Post subject: Daily Telegraph Fri, 8-Nov-2013 Diabolical

Code:

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

Play this puzzle online at the Daily Sudoku site

arkietech

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

Posted: Tue Nov 12, 2013 12:44 am Post subject:

Code:

*--------------------------------------------------------------------*
| 357 c356 b3456 | 1 9 2 |a457 8 57 |
| 157 9 45 | 345 8 37 | 1457 6 2 |
| 12578 158 2458 | 456 45 67 | 3 14 9 |
|----------------------+----------------------+----------------------|
| 6 358 358 | 7 1 38 | 2 9 4 |
| 29 7 29 | 456 45 68 | 158 3 158 |
| 4 38 1 | 35 2 9 | 58 7 6 |
|----------------------+----------------------+----------------------|
| 189 d168 7 | 2 3 5 |e1689-4 14 18 |
| 138 2 368 | 9 7 4 | 168 5 138 |
| 359 4 359 | 8 6 1 | 79 2 37 |
*--------------------------------------------------------------------*
4r1c7=(4-6)r1c3=r1c2-r7c2=7r7c7 => -4r7c7; ste

Marty R.

Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

Posted: Tue Nov 12, 2013 5:53 am Post subject:

Thanks for posting Clement.

Code:

+----------------+-----------+--------------+
| 357 356 3456 | 1 9 2 | 457 8 57 |
| 157 9 45 | 345 8 37 | 1457 6 2 |
| 12578 158 2458 | 456 45 67 | 3 14 9 |
+----------------+-----------+--------------+
| 6 358 358 | 7 1 38 | 2 9 4 |
| 29 7 29 | 456 45 68 | 158 3 158 |
| 4 38 1 | 35 2 9 | 58 7 6 |
+----------------+-----------+--------------+
| 189 168 7 | 2 3 5 | 14689 14 18 |
| 138 2 368 | 9 7 4 | 168 5 138 |
| 359 4 359 | 8 6 1 | 79 2 37 |
+----------------+-----------+--------------+

Play this puzzle online at the Daily Sudoku site

4r1c7-(4-6)r1c3=r8c3-(618=4)r8c7,r7c98=>r3c8<>4

Clement

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

Posted: Tue Nov 12, 2013 3:11 pm Post subject: Daily Telegraph Fri, 8-Nov-2013 Diabolical

Same elimination as Marty using a two-stepper
The x-wing on 1 in col 28 leads to the following grid

Code:

+--------------+-----------+----------+
| b37 c36 346 | 1 9 2 | a47 8 5 |
| 157 9 345 | 345 8 37 | 147 6 2 |
| 578 1568 2 | 456 45 67 | 3 1-4 9 |
+--------------+-----------+----------+
| 6 358 358 | 7 1 38 | 2 9 4 |
| 2 7 9 | 456 45 68 | 58 3 1 |
| 4 38 1 | 35 2 9 | 58 7 6 |
+--------------+-----------+----------+
| 9 d16 7 | 2 3 5 | 146 e14 8 |
| 18 2 68 | 9 7 4 | 16 5 3 |
| 35 4 35 | 8 6 1 | 9 2 7 |
+--------------+-----------+----------+

XY-Chain: (4=7)r1c7-(7=3)r1c1-(3=6)r1c2-(6=1)r7c2-(1=4)r7c8; => -4r3c8; stte.

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