## 19 April 2018

### Sudoku

Sudoku is a game in a grid (square of dimensions $9 \times 9$) designed in $1979$ by the American Howard Gams, inspired by the Latin square, as well as the problem of the $36$ officers of the Swiss mathematician Leonhard Euler.
The game objective is to complete the grid with a series of digits, all different, which can not be repeated nor in the same row, nor in the same column and nor in a sub-grid (square of dimensions $3 \times 3$). Some numbers are already in the grid, which allows the progressive resolution of the game. You can also play Sudoku online.