Here are Sudoku tips, techniques, and strategies for getting your head right and your pencil ready, whether you’re just learning how to play Sudoku or consider yourself a puzzle master. Sudoku pencil marking is a Sudoku solving approach in which problem solvers use a pencil to draw little numbers inside the squares to indicate which numbers might fit.
“After pencil marking the puzzle, the solver must examine the findings, discover specific number combinations, and figure which numbers should be placed where,” according to Conceptis Puzzles. Pencils are, of course, quick to erase once you’ve figured out the answer—or realized you’ve made a mistake. In this problem, your pencil will not assist you in locating the missing number.
A single candidate is a simple Sudoku problem solution approach. This Sudoku approach involves “using pencil markings to store what possibilities are still possible within each cell,” according to Sudoku of the Day. “By then inspecting the surrounding column, row, and box, a single candidate indicates you’ve managed to rule out all other options for a given cell,” the site says, leaving only one number that might match.
Do you want to take on another challenge? Here are some brain teasers that will stump you. According to thonky.com, a hidden pair occurs in Sudoku when “a pair of numbers appear in exactly two squares in a row, column, or block, but those two numbers aren’t the only ones in their squares.”
