What is Sudoku and how does Sensible Sudoku work?
The rules behind Sudoku itself are very simple – you need to enter numbers between 1 and 9 on the non-filled cells, so that each row and column of the board only has a number once (no repetitions inside each row and column); also each area (areas are the 3×3 square blocks) can only hold each of the 9 numbers only once. With the initial and entered numbers as clues and these non-repetition rules, it’s possible to keep discovering numbers till the board is completed. Sensible Sudoku starts in an easy mode that won’t allow wrong numbers to be entered – more advanced players might choose to switch to a mode where the game won’t warn you on incorrect numbers. For harder levels, the pencil mode (pencil icon at the right-bottom corner) is useful as it let’s you annotate the possible numbers for a cell. Sensible Sudoku doesn’t include a user manual, because it was designed to be very intuitive, if the player knows Sudoku, the game should unroll in an intuitive way for the player – this was the
