11 Simple Ways To Solve Sudoku When Stuck
If seeing all of the possible numbers in the cells looks overwhelming, only notate the squares that have 2 or 3 potential numbers instead. Once you fill in the number, check the row, column, and box that the cell was in and erase any other instances of that number. Be on the lookout for “hidden singles” as well. You can fill in a number if it isn’t written down anywhere else in the same row, column, or box, even if there are other candidates in that cell....