How to play
Grand Chess

The Cardinal and Marshal pieces are introduced on a 10x10 board.

Introduction

Grand Chess is played on an enlarged 10 x 10 board with two additional pieces, the Marshal and the Cardinal.

Starting Position

The Queen and King sit next to the Marshal and Cardinal.

Rooks hold the corners, whilst the rest of the home rank is inset one square.
Board is interactive - make a move

Moves of the Pieces

Grand Chess adds a Marshal and a Cardinal, both of which combine the power of a Knight with another either a Rook or a Bishop.

Marshal
Marshal

The Marshal moves as if a Rook and a Knight.

Moves like a Knight, which can also attack horizontally and vertically like a Rook.
Board is interactive - make a move
Cardinal
Cardinal

The Cardinal moves as if a Bishop and a Knight

Moves like a Knight that can attack the diagonals too, like a Bishop.
Board is interactive - make a move

Pawn Promotion

On reaching the eighth or ninth ranks, a pawn can choose to promote or continue as a pawn. Promotion is mandatory on the tenth rank.

A Pawn can only promote to a captured piece of the same color. If none are available (no non-pawn captures have taken place thus far) then the Pawn cannot proceed on to the tenth rank.

Castling

There is no Castling when playing Grand Chess.

En Passant

En passant rules remains the same as Standard Chess.

Check and Checkmate

Check and Checkmate rules remain the same as Standard Chess.

Stalemate

Stalemate conditions remain the same as Standard Chess.

Draw

Draw conditions remain the same as Standard Chess.

Winning

Winning conditions remain the same as Standard Chess.

Attribution