The New Sudoku Players' Forum

[ZdravkoDimitrov]

I have been trying to solve this one for a long time, and just need a hint on what to do next. Would really appreciate your help!

[Leren]

Code: Select all

*-----------------------------------------------*
| 1  89 23 | 36-2  368   *29    | 7   4     5   |
| 4  89 23 | 7     358-1  5-129 | 129 129   6   |
| 6  5  7  |*124  *14    *1249  | 3   8     129 |
|----------+--------------------+---------------|
| 8  23 1  | 5     9      6     | 4   7     23  |
| 7  34 6  | 8     2      14    | 5   139   139 |
| 5  24 9  | 14    7      3     | 6   12    8   |
|----------+--------------------+---------------|
| 23 1  5  | 2349  34     7     | 8   6     239 |
| 23 6  4  | 1239  135    8     | 129 12359 7   |
| 9  7  8  | 1236  1356   125   | 12  1235  4   |
*-----------------------------------------------*

The next step would be a naked quad (1249) in the 4 cells marked * in Box 2. It solves r2c6 = 5 but not the whole puzzle.

Leren

[ZdravkoDimitrov]

This is excellent, thank you very much!