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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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 Posted: Tue Oct 20, 2015 4:25 pm Post subject: October 18 diabolical feom Sudoku.org.UK |
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I enjoyed this one, using four steps but not convinced that all were necessary.
| Code: |
+-------+-------+-------+
| . 5 2 | . . . | 9 . . |
| . 9 . | 2 . 5 | . 3 8 |
| . . . | . . 1 | . . . |
+-------+-------+-------+
| . . 8 | 9 . 3 | . . . |
| . . 6 | . . . | 7 . . |
| . . . | 1 . 2 | 5 . . |
+-------+-------+-------+
| . . . | 8 . . | . . . |
| 1 2 . | . . 9 | . 5 . |
| . 8 9 | . . . | 3 1 . |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site |
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JC Van Hay
Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
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| Posted: Tue Oct 20, 2015 5:03 pm Post subject: |
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| Code: | +-------------------+--------------+------------------+
| 36(4) 5 2 | 367 8 67 | 9 7-4 1 |
| 7 9 1 | 2 4 5 | 6 3 8 |
| 8 346 34 | 367 9 1 | 2(4) 247 5 |
+-------------------+--------------+------------------+
| 5 47 8 | 9 67 3 | 1 46 2 |
| 2 1 6 | 4 5 8 | 7 9 3 |
| 9 347 347 | 1 67 2 | 5 8 46 |
+-------------------+--------------+------------------+
| 36(4) 3467 5 | 8 1 467 | 2(4) 246 9 |
| 1 2 7(4) | 67 3 9 | 8 5 67(4) |
| 6(4) 8 9 | 5 2 467 | 3 1 467 |
+-------------------+--------------+------------------+
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(4)[r1c1=r79c1-r8c3=r8c9-r7c7=r3c7]-4r1c8; stte |
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