Getting My sudoku hard - hard sudoku To Work
Bare and hidden singles are the best squares to solve. A unadorned solitary is any time a quantity can only go in a single feasible mobile. A hidden solitary is when there is only cell for just a presented candidate.​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​â€