The New Sudoku Players' Forum

[lath]

Hello,

what would then next move be? And please tell me what technique or how you figured it out. Thanks!

[Crazy Girl]

Lath,

You have no 1's in the puzzle, and also you have no 4's in the puzzle so you could exchange the 1's to 4's and vice versa, and still have a solution.

So if you want to solve this sudoku you need to know where a 1 is or where a 4 is otherwise there are two valid solutions to this puzzle. You can't use logic to determine a solution to the current grid.

[daj95376]

You have an invalid puzzle with four solutions.

Code: Select all

 *-----------*
 |..3|...|.96|
 |7.5|..9|8.3|
 |.96|.3.|5.2|
 |---+---+---|
 |96.|3..|.25|
 |.38|572|96.|
 |25.|..6|.3.|
 |---+---+---|
 |..2|...|38.|
 |6.9|8.3|2.7|
 |38.|.2.|6..|
 *-----------*

 *--------------------------------------------------------------------*
 | 148    124    3      | 1247   1458   14578  | 147    9      6      |
 | 7      124    5      | 1246   146    9      | 8      14     3      |
 | 148    9      6      | 147    3      1478   | 5      147    2      |
 |----------------------+----------------------+----------------------|
 | 9      6      147    | 3      148    148    | 147    2      5      |
 | 14     3      8      | 5      7      2      | 9      6      14     |
 | 2      5      147    | 149    1489   6      | 147    3      148    |
 |----------------------+----------------------+----------------------|
 | 145    147    2      | 14679  14569  1457   | 3      8      149    |
 | 6      14     9      | 8      145    3      | 2      145    7      |
 | 3      8      147    | 1479   2      1457   | 6      145    149    |
 *--------------------------------------------------------------------*


[lath]

ah, that explains it. thanks...