Tawlbwrdd is a game in the tafl family mentioned in Peniarth Manuscript 158, describing a portion of the game as played in Wales during the sixteenth century.
Rules
11x11 board. One player plays with a king piece and twelve defenders, the other with 24 attackers. The king piece begins on the central space with the defenders surrounding it, and the attackers in the central five spaces of each outer edge, and one in the central spot in front of each of these lines. Captures are made when a piece is caught between two opposing pieces.