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daj95376
Joined: 23 Aug 2008 Posts: 3854
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Posted: Fri Dec 19, 2008 10:16 pm Post subject: Set G Puzzle 64 |
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Code: | +-----------------------+
| 5 . . | 2 . . | . 4 9 |
| . . . | . 4 . | . . . |
| . . 4 | 3 9 . | . 1 . |
|-------+-------+-------|
| 8 . 6 | 4 . . | . . 2 |
| . 5 3 | . 2 . | 4 . . |
| . . . | . . 3 | . 6 . |
|-------+-------+-------|
| . . . | . 6 . | . 8 . |
| 1 . 5 | . . 4 | 9 7 6 |
| 6 . . | 1 . . | . 2 4 |
+-----------------------+
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Play this puzzle online at the Daily Sudoku site |
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Marty R.
Joined: 12 Feb 2006 Posts: 5770 Location: Rochester, NY, USA
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Posted: Sat Dec 20, 2008 12:59 am Post subject: |
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This is another one I had to chip away at. Five ERs, kite, simple coloring, couple of X-Wings and a W-Wing to finish it off. |
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storm_norm
Joined: 18 Oct 2007 Posts: 1741
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Posted: Sat Dec 20, 2008 6:30 am Post subject: |
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Code: | .---------------------.---------------------.---------------------.
| 5 3678 178 | 2 178 1678 | 3678 4 9 |
| 39 36789 1789 | 57 4 15678 | 2 35 3578 |
| 2 678 4 | 3 9 5678 | 5678 1 578 |
:---------------------+---------------------+---------------------:
| 8 19 6 | 4 157 1579 | 1357 35 2 |
| 7 5 3 | 6 2 18 | 4 9 18 |
| 49 149 2 | 579 1578 3 | 1578 6 1578 |
:---------------------+---------------------+---------------------:
| 349 3479 79 | 579 6 2 | 135 8 135 |
| 1 2 5 | 8 3 4 | 9 7 6 |
| 6 3789 789 | 1 57 579 | 35 2 4 |
'---------------------'---------------------'---------------------' |
I couldn't find a way around the x-wing on 3, but all I needed was the elimination of 3 in r2c8 from it.
1. x-wing on 3
2. (9=3)r2c1 - (3)r7c1 = (3)r9c2 - (3=5)r9c7 - (5)r9c5 = (5-9)r7c4 = (9)r6c4; r6c1 <> 9
3. xy- wing (5,7,9)... (5=9)r6c4 - (9=7)r4c6 - (7=5)r4c7; r6c9 <> 5.
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