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Clement
Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
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 Posted: Fri Mar 25, 2016 8:33 pm Post subject: The Daily Sudoku for 25/3/2016-Diabolical |
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| Code: |
+-------+-------+-------+
| 5 . . | . 4 . | . 2 . |
| 3 . . | . . . | . . 1 |
| . 6 9 | . . . | . . . |
+-------+-------+-------+
| . 2 . | 6 5 . | . . 3 |
| . . 5 | 3 . 2 | 9 . . |
| 9 . . | . 1 8 | . 7 . |
+-------+-------+-------+
| . . . | . . . | 1 9 . |
| 6 . . | . . . | . . 5 |
| . 4 . | . 2 . | . . 8 |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site |
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Clement
Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
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| Posted: Mon Mar 28, 2016 9:13 pm Post subject: Daily Sudoku for 25/3/2016-Diabolical |
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| Code: |
+---------------+-----------+--------------+
| 5 178 18 | 78 4 367 | 3678 2 9 |
| 3 78 24 | 25 9 67 | 4678 4568 1 |
| b24 6 9 | 25 38 1 | 3478 3458 a47 |
+---------------+-----------+--------------+
| 1478 2 1478 | 6 5 9 | 48 148 3 |
| 148 18 5 | 3 7 2 | 9 148 6 |
| 9 3 6 | 4 1 8 | 5 7 2 |
+---------------+-----------+--------------+
| c278 5 d2378 | 78 6 e347 | 1 9 f4-7 |
| 6 9 378 | 1 38 347 | 2 34 5 |
| 17 4 137 | 9 2 5 | 367 36 8 |
+---------------+-----------+--------------+
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(7=4)r3c9 - (4=2)r3c1 - r7c1 = (2-3)r7c3 = (3-4)r7c6 = (4)r7c9 => - 7 r7c9; stte |
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dongrave
Joined: 06 Mar 2014
Posts: 568
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| Posted: Mon Mar 28, 2016 10:28 pm Post subject: |
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Hey! Wait a minute. I found a chain that eliminated the 7 from r7c9 too but I got stuck finishing it with basics so I gave up since it didn't appear to be a one-stepper. Darn it all. I got down to a bunch of interconnected cells but no obvious way to proceed.
Edit: I just went back and checked my worksheet Clement. Are you sure that r7c9 solves it? (I still don't see it.) I had cells r2c34, r3c14, and r4c6 circled as possible one-steppers and I had a big 'NO!' pointing to r7c9 along with light slashes through all the cells that I was able to solve from it. |
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Clement
Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
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| Posted: Tue Mar 29, 2016 12:32 pm Post subject: |
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| dongrave wrote: | Hey! Wait a minute. I found a chain that eliminated the 7 from r7c9 too but I got stuck finishing it with basics so I gave up since it didn't appear to be a one-stepper. Darn it all. I got down to a bunch of interconnected cells but no obvious way to proceed.
Edit: I just went back and checked my worksheet Clement. Are you sure that r7c9 solves it? (I still don't see it.) I had cells r2c34, r3c14, and r4c6 circled as possible one-steppers and I had a big 'NO!' pointing to r7c9 along with light slashes through all the cells that I was able to solve from it. |
You are right. I must have inserted a correct number erroneously in the process of completing it. After eliminating 7 in r7c9 the grid which follows is like this
| Code: |
+---------+--------+----------+
| 5 7 1 | 8 4 6 | 3 2 9 |
| 3 8 24 | 25 9 7 | 6 45 1 |
| 24 6 9 | 25 3 1 | 48 458 7 |
+---------+--------+----------+
| 7 2 48 | 6 5 9 | 48 1 3 |
| 48 1 5 | 3 7 2 | 9 48 6 |
| 9 3 6 | 4 1 8 | 5 7 2 |
+---------+--------+----------+
| 28 5 28 | 7 6 3 | 1 9 4 |
| 6 9 7 | 1 8 4 | 2 3 5 |
| 1 4 3 | 9 2 5 | 7 6 8 |
+---------+--------+----------+
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Which can be completed by BUG+1; r3c8=4 or other techniques. I am sorry for the inconvenience. |
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