Chad is a chess variant for two players created by Christian Freeling in 1979.
It is played on an uncheckered 12x12 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 matethe '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.
On each turn, each player moves one of his pieces.
- The king can move and capture like a chess king or a chess knight.
- The king may not move or capture outside its castle.
- The king cannot move to a cell within the moving range of an enemy piece.
- The Rook slides orthogonally any number of empty cells (like the chess Rook).
- If a Rook enters the enemy castle, it is promoted to Queen.
- The Queen slides orthogonally or diagonally any number of empty cells (like the chess Queen).
Both the Rook and the Queen only capture when one piece is inside its castle and the other is on top of the castle's wall.
Apart from this situation pieces simply block one another
Check occurs to a king whenever the king is in the path of an enemy rook or queen
A player wins by checkmating the enemy King.
Black - did checkmate to White.