Classic 8 × 8 rules
Move one square diagonally forward on dark squares. Jump over an opponent to capture. Captures are compulsory: if a jump is available, you must take it. Continue jumping with the same piece while another capture is available.
Crowning a new king ends that turn. Win by capturing every opposing piece or leaving your opponent with no legal move.
Draws & rule source
This version automatically draws on the third repeated position or after 80 consecutive turns with no capture or move by an uncrowned piece. It uses English/American checkers movement rules.
WCDF rules