10
Here is the rules for Suduko if it can help any developer..
The Sudoku is played over 9x9 grid, in each row there are 9 slots, some of them are empty and need to be filled
Each row, column and “area” (3*3) should contain the numbers 1 to 9 however:
· Number can appear only once on each row
· Number can appear only once on each column
· Number can appear only once on each area (3*3 slots)
The bottom line : the number should appear only once on row, column or area.
However – above all the ultimate challenge behind it is doing it fast!
Apparently there are 6,670,903,752,021,072,936,960 possible games, so the first one is just a beginning of intruding fun game – you are just warming up!
Sudukogame