According to Pritchard , Petty Chess was invented by B. Walker Watson in 1930, and first published in the September 1930 issue of the British Chess Magazine. The game is played on a board of 5 by 6 squares.
Pawns can only advance one space on their first move.
There is no en passant capturing. A pawn can only promote to a captured piece. There is no castling. Text by Richard Sullivan and Hans Bodlaender. Information based on Pritchard's Encyclopedia of Chess Variants , and other sources.