Advanced methods and approaches for solving Sudoku puzzles
by bennys » Thu Dec 01, 2005 8:58 am
- Code: Select all
Puzzle: Menneske.no Super Hard #4363404
+-------+-------+-------+
| . 7 . | 5 . 9 | 3 4 8 |
| 3 5 9 | 8 . 4 | . . 7 |
| 4 8 . | 3 . . | . 5 9 |
+-------+-------+-------+
| . . 7 | . . . | 5 . . |
| 5 2 . | . . . | . 3 6 |
| . . 8 | . . . | . . . |
+-------+-------+-------+
| . . . | 6 . . | . . 3 |
| . . 5 | . 3 1 | . . 2 |
| 7 6 3 | 4 8 2 | 9 1 5 |
+-------+-------+-------+
+----------------+----------------+----------------+
| 12 7 126 | 5 126 9 | 3 4 8 |
| 3 5 9 | 8 126 4 |*126 26 7 |
| 4 8 126 | 3 1267 67 |*126 5 9 |
+----------------+----------------+----------------+
| 169 1349 7 | 12 46 368 | 5 289 14 |
| 5 2 14 | 19 49 78 | 78 3 6 |
| 169 1349 8 | 127 4567 3567 |*27 279 14 |
+----------------+----------------+----------------+
| 1289 149 124 | 6 579 57 | 478 78 3 |
|*89 *49 5 | 79 3 1 |*4678 678 2 |
| 7 6 3 | 4 8 2 | 9 1 5 |
+----------------+----------------+----------------+
A={R2C7,R3C7,R6C7}
B={R8C1,R8C2,R8C7}
R6C4=7 => R5C7=7 then
A is locked on 126 which make also B locked on 849 which make R8C4=7
whice mean R6C4<>7
-
bennys
-
- Posts: 156
- Joined: 28 September 2005
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