Just a thought experiment. I was implying that chess is a game, not a board. That game can be encoded/coded without any need for a Z variable, can't it? My Roo

Just a thought experiment. I was implying that chess is a game, not a board. That game can be encoded/coded without any need for a Z variable, can't it? My Rook doesn't go up and down an ladder, it doesn't need a 3D array to record its position. So that's 2D + Time, or 3D. YRMV.