Hello,
I'm still trying to master (LOL) sudoku! I get stumped on the very hard ones (and some hard ones).
I have reached a stopping point in this puzzle. Unless I have missed a simple step, I think I need some techniques that I haven't mastered (there are many!!)
I copied the puzzle to simple sudoku, clicked the question mark and column 7 was highlighted in blue and yellow. I then clicked solve next step and the blue remained unchanged, the yellow squares were reduced.
The column is as follows:
57
357 (reduced to 3)
4
6
289 (reduced to 89)
27
25
3589(reduced to 389)
I would appreciate someone explaining the reductions in this column to me. Thanks so much.
P.S. Any other hints would be appreciated!!!!!
*-----------*
|94.|..3|.26|
|.6.|9.4|.18|
|1..|26.|49.|
|---+---+---|
|894|327|651|
|...|..6|...|
|.16|.89|.3.|
|---+---+---|
|731|.9.|.6.|
|48.|6.2|17.|
|62.|7.1|...|
*-----------*
*-----------------------------------------------------------*
| 9 4 78 | 158 157 3 | 57 2 6 |
| 235 6 237 | 9 57 4 | 357 1 8 |
| 1 57 378 | 2 6 58 | 4 9 357 |
|-------------------+-------------------+-------------------|
| 8 9 4 | 3 2 7 | 6 5 1 |
| 235 57 237 | 15 145 6 | 289 48 29 |
| 25 1 6 | 45 8 9 | 27 3 247 |
|-------------------+-------------------+-------------------|
| 7 3 1 | 458 9 58 | 25 6 245 |
| 4 8 59 | 6 35 2 | 1 7 359 |
| 6 2 59 | 7 345 1 | 3589 48 359 |
*-----------------------------------------------------------*