Using logic and the other numbers in the rows and columns, try to quickly fill in the missing numbers.
If you have a large screen phone, try both versions to see which one is a better fit for your device.
The objective is to fill the 9x9 Sudoku grid with digits 1 to 9 such that each of these 9 digits appears in each row, each column and each 3x3 sub-grid once any only once.
Naked Triples Naked triples occur in rows or columns when you have three candidates that overlap.
The rules are still the same as ever, but the allocated clues at the start of the game are even more reduced.