Campaign (also known as "Buck 20") is a simplified version of Chess, designed to be a good introductory game, easier to teach and to learn. The board size is reduced to 5x7. There are no knights or queens, nor are there "en passant" captures. The medieval piece names have been replaced with modern political terms: candidate, bodyguard, handler, and intern. Coins are used for playing pieces: one player plays heads and the other plays tails. For a more tense game, play for keeps.