Dai shogi

Dai shogi, meaning large chess, also known as Kamakura dai shogi, is a board game native to Japan. It derived from Heian era shogi and is similar to standard shogi, sometimes called Japanese chess, in its rules and game play. It is one of several large board shogi variants that arose when Japanese chess existed in three different board sizes, with early versions traced to around the Kamakura period. Dai shogi later served as the historical basis for chu shogi, a smaller and more popular variant that removed some of its weaker pieces.