The famous game of strategy and observation!

You can play with numbers or with colours,to vary the challenges.

The aim of the game :

Fill the grid with numbers 1 to 9 or with 9 different colours.They should never be repeated on the same line,in the same column, or in the same sub- grid( the sub -grids contain 3×3 squares)

How to play 

Place the ordered pieces on the board as indicated on the chosen question page.

Fill all the empty boxes , ensuring that the same color is not repeated within the same column of line, and only appears once within one grid of nine square.