Chad (chess variant) Chad (chess variant) Chad is a chess variant for two players created by Christian Freeling in 1979. It is played on an uncheckered 12×12 gameboard with one king and eight rooks per side, where rooks are able to promote to queens. The inventor's aim was "to create a game of tactical and strategical depth that was both simple and elegant to express the concept of "mate"—the 'pure' chess game". The game was played for many years at the Fanaat games club in the Netherlands and was featured in the periodical "The Gamer" 6 in May–June 1982. Each player owns a
Dark chess Dark chess Dark chess is a chess variant with incomplete information, similar to Kriegspiel. It was invented by Jens Bæk Nielsen and Torben Osted in 1989. A player does not see the entire board, only their own pieces and the squares that they can legally move to. The goal of this chess variant is not to checkmate the king, but to capture it. A player is not told if their king is in check. Failing to move out of check, or moving into check, are both legal, and can obviously result in a capture and loss of the game. Each