Most online checkers games use the standard British-American checkers rules. However, you may also encounter these checkers rule variations.
Suicide checkers, also known as anti-checkers, is the opposite of regular checkers. The winner is the first player with no checkers left, or who can’t make a legal move.
International draughts is played on a 10×10 board with 20 pieces per player. Kings can move across multiple squares as long as the squares are open. This rule is sometimes known as “flying kings”. If you have more than one path to jump and capture your opponent’s checkers, you must take the path that will capture the most checkers. If a checker lands in the king row during a jump, it must continue jumping backward if there is another jump opportunity. That checker is not kinged unless it finishes the move in the king row.
Canadian checkers is played on a 12×12 board with 30 checkers per player. Otherwise, the rules are similar to International draughts.
Brazilian checkers is played on an 8×8 board. Otherwise, the rules are similar to International draughts.
Italian checkers is played on an 8×8 board. The main difference between Italian checkers and British-American checkers is that regular checkers cannot jump kings.
Chinese checkers is not a variant of checkers. It is a game played on a star-shaped board using marbles or pegs. You can find the rules to chinese checkers here.