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Daily Telegraph Fri, 12-Apr-2013 Diabolical

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Clement

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

Posted: Sat Apr 13, 2013 9:25 pm Post subject: Daily Telegraph Fri, 12-Apr-2013 Diabolical

Code:

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

Play this puzzle online at the Daily Sudoku site

Marty R.

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

Posted: Sun Apr 14, 2013 1:04 am Post subject:

Code:

+------------+------------------+--------------+
| 1 8 3 | 2 4 79 | 59 57 6 |
| 69 29 47 | 3 6789 5 | 89 1 24 |
| 569 259 47 | 6789 16789 16789 | 3 78 24 |
+------------+------------------+--------------+
| 4 3 8 | 579 179 2 | 156 56 19 |
| 2 7 6 | 589 189 1389 | 4 358 1389 |
| 59 159 19 | 4 68 368 | 7 2 38 |
+------------+------------------+--------------+
| 38 69 5 | 679 2 4 | 168 368 1378 |
| 38 4 2 | 1 5 67 | 68 9 378 |
| 7 169 19 | 689 3 689 | 2 4 5 |
+------------+------------------+--------------+

Play this puzzle online at the Daily Sudoku site

I struggled with this one, unsuccessfully trying to solve it without chains.

XY-Chain (8=6)r8c7-(6=7)r8c6-(7=9)r1c6-(9=5)r1c7-(5=7)r1c8-(7=8)r3c8=>r2c7<>8

Code:

+-----------+-------------+-------------+
| 1 8 3 | 2 4 9 | 5 7 6 |
| 6 2 7 | 3 8 5 | 9 1 4 |
| 59 59 4 | 67 17 167 | 3 8 2 |
+-----------+-------------+-------------+
| 4 3 8 | 579 179 2 | 16 56 19 |
| 2 7 6 | 589 19 138 | 4 35 1389 |
| 59 159 19 | 4 6 38 | 7 2 38 |
+-----------+-------------+-------------+
| 38 69 5 | 679 2 4 | 168 36 1378 |
| 38 4 2 | 1 5 67 | 68 9 378 |
| 7 169 19 | 689 3 68 | 2 4 5 |
+-----------+-------------+-------------+

Play this puzzle online at the Daily Sudoku site

XY-Wing (36-8), pivot r7c8=>r8c1<>8

arkietech

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

Posted: Sun Apr 14, 2013 2:55 am Post subject:

I posted this puzzle on the players site. I will remove it

Code:

*--------------------------------------------------------------------*
| 1 8 3 | 2 4 79 | 59 57 6 |
| 69 29 47 | 3 6789 5 | 89 1 24 |
| 569 259 47 | 6789 16789 16789 | 3 78 24 |
|----------------------+----------------------+----------------------|
| 4 3 8 | 579 179 2 | 156 56 19 |
| 2 7 6 | 589 189 1389 | 4 358 1389 |
| 59 159 19 | 4 68 368 | 7 2 38 |
|----------------------+----------------------+----------------------|
| 38 69 5 | 679 2 4 | 168 368 1378 |
| 38 4 2 | 1 5 67 | 68 9 378 |
| 7 169 19 | 689 3 689 | 2 4 5 |
*--------------------------------------------------------------------*
ur:
(7=1)38r78c19-(1r7c7=7r8c9)b9 => 7r8c9; ste

Clement

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

Posted: Sun Apr 14, 2013 5:06 am Post subject: Daily Telegraph Fri, 12-Apr-2013 Diabolical

I had the same solution as Marty.

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