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keith
Joined: 19 Sep 2005 Posts: 3355 Location: near Detroit, Michigan, USA
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Posted: Sat Feb 09, 2013 8:02 pm Post subject: Free Press February 8, 2013 |
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Not so easy, maybe ...
Code: | Puzzle: FP020813
+-------+-------+-------+
| 6 4 . | . . . | . . 1 |
| . 5 . | . . . | . 7 . |
| . . 2 | 4 1 . | . . . |
+-------+-------+-------+
| . . . | 2 . . | 5 9 . |
| . . . | 3 . 4 | . . . |
| . 9 4 | . . 5 | 8 . . |
+-------+-------+-------+
| . . . | . 2 3 | 1 . . |
| . 8 . | . . . | . 3 . |
| 2 . . | . . . | . 4 5 |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site
Keith |
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Marty R.
Joined: 12 Feb 2006 Posts: 5770 Location: Rochester, NY, USA
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Posted: Sun Feb 10, 2013 2:01 am Post subject: |
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Code: |
+-------------+-----------------+---------+
| 6 4 79 | 79 5 2 | 3 8 1 |
| 189 5 189 | 689 3 689 | 4 7 2 |
| 78 3 2 | 4 1 78 | 69 5 69 |
+-------------+-----------------+---------+
| 3 16 167 | 2 78 178 | 5 9 4 |
| 58 2 58 | 3 9 4 | 67 1 67 |
| 17 9 4 | 167 67 5 | 8 2 3 |
+-------------+-----------------+---------+
| 4 7 59 | 59 2 3 | 1 6 8 |
| 159 8 1569 | 15679 4 1679 | 2 3 79 |
| 2 16 3 | 16789 678 16789 | 79 4 5 |
+-------------+-----------------+---------+
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Play this puzzle online at the Daily Sudoku site
I couldn't find anything to open it up, so I started hacking away.
XY-Chain (8=7)r3c1-(7=9)r1c3-(9=5)r7c3)-(5=8)r5c3=>r5c1<>8
X-Wing on 9 in r17
Sashimi X-Wing on 7 in r14
Skyscraper on 7 in r36
Those left me here:
Code: |
+----------+---------------+---------+
| 6 4 79 | 79 5 2 | 3 8 1 |
| 89 5 1 | 68 3 689 | 4 7 2 |
| 78 3 2 | 4 1 78 | 69 5 69 |
+----------+---------------+---------+
| 3 16 67 | 2 78 18 | 5 9 4 |
| 5 2 8 | 3 9 4 | 67 1 67 |
| 17 9 4 | 16 67 5 | 8 2 3 |
+----------+---------------+---------+
| 4 7 59 | 59 2 3 | 1 6 8 |
| 19 8 56 | 1567 4 1679 | 2 3 79 |
| 2 16 3 | 1678 68 16789 | 79 4 5 |
+----------+---------------+---------+
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Play this puzzle online at the Daily Sudoku site
At this point it mercifully ended with a short XY-Chain:
(7=1)r6c1-(1=6)r6c4-(6=8)r2c4-(8=7)r3c6=>r3c1<>7
I have to think there are shorter routes but I had already invested more than enough time on this thing. |
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Marty R.
Joined: 12 Feb 2006 Posts: 5770 Location: Rochester, NY, USA
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Posted: Sun Feb 10, 2013 4:51 am Post subject: |
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Upon further review, it looks like the X-Wing and Sashimi and the last XY-Chain would've been enough. |
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