# How many possible 9×9 Sudoku grids are there?

## How many possible 9×9 Sudoku grids are there?

6670903752021072936960
They discovered that the number of possible 9 by 9 Sudoku grids is N=6670903752021072936960 which is approximately 6.671×1021.

## What is the fastest way to answer Sudoku?

Focus on only one part of a square, row, or column rather than worrying about the entire grid all in one go. Slowly work your way up until you fill up all 81 spaces. You can start with a single square, then a row, then a column. Getting rid of all other distractions will help you solve the Sudoku grid much faster.

Is Sudoku linear algebra?

Overall, though linear algebra cannot be used to solve all sudoku puzzles it can be a very useful tool in solving them and it could be implemented to drastically reduce the number of possibilities and help with solving a Sudoku puzzle.

Is there a trick in Sudoku?

There are more than a few techniques to solve a Sudoku puzzle, but per Conceptis Puzzles, the easiest way to a Sudoku solution is to, “Scan rows and columns within each triple-box area, eliminating numbers or squares and finding situations where only a single number can fit into a single square.” If you’re looking to …