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hughwill
Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK
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 Posted: Tue Dec 20, 2016 9:41 am Post subject: Dec 20 Hard (with VH solutions) |
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We don't normally discuss Hards but
After most (but not all) basics | Code: |
+------------+----------+------------+
| 38 38 7 | 1 46 2 | 9 46 5 |
| 5 1 2 | 46 8 9 | 36 467 367 |
| 6 4 9 | 5 3 7 | 2 1 8 |
+------------+----------+------------+
| 37 35 6 | 8 2 1 | 4 57 9 |
| 78 2 58 | 9 567 4 | 1 3 67 |
| 1 9 4 | 67 567 3 | 8 567 2 |
+------------+----------+------------+
| 4 3678 38 | 37 9 5 | 36 2 1 |
| 2 356 35 | 34 1 8 | 7 9 346 |
| 9 37 1 | 2 47 6 | 5 8 34 |
+------------+----------+------------+
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Play this puzzle online at the Daily Sudoku site
At this point I didn't bother with the basics solution as there are no less
than 3 XY-wings which convert this to an 'easy' puzzle: 2 47-3 wings both
pivoted on r9c5 and a 58-3 pivoted on r5c3. Makes the humble 'Hard'
a bit more interesting...
Hugh
PS Of course the box-line interaction removing the 3s from c2 in Box 7
sorts it out but that's not much fun...... |
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