An 8x8 pixel chessboard would require players to memorize which color corresponds to which piece type (for both sides). You could also have certain flickering

An 8x8 pixel chessboard would require players to memorize which color corresponds to which piece type (for both sides). You could also have certain flickering colors represent certain pieces, but overall it would require good color vision from all players. Alternatively, you could have an 8x8 character grid; monochrome if you represent things like: rnbqkbnr pppppppp . . . . . . . . . . . . . . . . PPPPPPPP RNBQKBNR or ♜♞♝♛♚♝♞♜ ♟♟♟♟♟♟♟♟ ＿█＿█＿█＿█ █＿█＿█＿█＿ ＿█＿█＿█＿█ █＿█＿█＿█＿ ♙♙♙♙♙♙♙♙ ♖♘♗♕♔♗♘♖ (The second board may not be properly fixed-width in your local "fixed-width" font, but you get the picture).