Corridor Chess

Circles or octagons on a gradient field, with colors you can tune until the two shades are nearly the same. Change style and colors at any time, even mid-game.

White to moveTap a piece to see its moves.

DarkLight
White controls Black controls Contested, split by share
Piece could be lostAttacked, but protected

Moves

    No moves yet.

    Simple shapes: the plus (rook), X (bishop) and star (queen) draw the directions the piece slides, and long-range pieces get an accent halo. Short-range pieces stay small and plain: dot (pawn), L (knight), square with a plus (king).

    Control map: each side's reach is merged into one outlined area, so touching squares read as a single shape. A square both sides reach is split along a diagonal, white in the lower left and black in the upper right, and the split moves toward the weaker side as the other side adds pieces. Squares that hold a piece are shaded like any other, so a protected piece sits inside its own side's area and an attacked piece inside the attacker's. Control layer chooses whether the areas sit behind the board, showing in the gaps around the squares, or on top of the squares. Pins are ignored, and nothing is counted through a piece.

    Rules include castling, en passant, promotion, check, checkmate and draws. The computer looks one or two moves ahead, so it is a casual opponent.