The New Sudoku Players' Forum

[Pavel93]

Hello. Yesterday I started solving a difficult Sudoku on the Escape Sudoku website. But at a certain stage I don't know what to do next . Tell me what techniques can be used? I'm adding a link to the Sudoku picture below.

https://prnt.sc/pzibzqbbDwc7

[Maxito_Bahiense]

Givens:

Code: Select all

.5..6.7....1.......2.1.......8......5....96.....472.9.36.....48.....7.3..4..9....

Actually, you have made some mistakes, for instance eliminating some candidates for digit 3 that shouldn't have disappeared... I'll pass you this state that is correct:

Code: Select all

.---------------.-----------------.--------------------.
| 48    5   34  | 9    6     348  | 7     128    1234  |
| 69    38  1   | 7    2358  3458 | 2345  2568   23469 |
| 7     2   69  | 1    358   3458 | 345   568    3469  |
:---------------+-----------------+--------------------:
| 24    9   8   | 356  135   1356 | 1234  127    12347 |
| 5     7   24  | 38   138   9    | 6     12     1234  |
| 16    13  36  | 4    7     2    | 8     9      5     |
:---------------+-----------------+--------------------:
| 3     6   7   | 25   125   15   | 9     4      8     |
| 1289  18  259 | 68   4     7    | 125   3      126   |
| 128   4   25  | 368  9     368  | 125   12567  1267  |
'---------------'-----------------'--------------------'



From here, you can go further with some hidden singles, pointing/claiming, naked and hidden sets.