Simultaneous Chess vs Rapid Chess

Simultaneous chess is an exhibition format in which one strong player, commonly a master or grandmaster, plays separate games against several opponents at the same time. The exhibitor normally moves from board to board, making a move on each board before returning to the next, while the opponents think between visits. The format tests calculation, memory, time management, and the ability to adapt...

Rapid chess uses the ordinary chess game with a shorter time allowance, rather than introducing different pieces or a new board. Under the FIDE definition, each player has more than 10 minutes but less than 60 minutes for the entire game. Where an increment adds time after each move, the calculation uses the initial allowance plus 60 increments. This places rapid between blitz and longer forms of...