Of a match at chess: conducted by a player without seeing the board but not necessarily blindfolded; hence blindfold player.

In Chess, denoting a number of games played against a number of opponents simultaneously by one player. Also absol.

Designating or relating to play in which participants face each other across the chessboard (as opposed to correspondence play, problem chess, etc.).

Of, relating to, or designating a chess tournament in which each of the players plays each of the others in turn.

Designating a system of organizing tournaments, usually of bridge or chess, under which each player or team is matched, in each round except the…