What is chess simultaneous?

Chess simultaneous is an event in which a single player plays against multiple opponents at the same time. The player moves from board to board, making a move on each board in turn. This is commonly done by skilled players who are capable of visualizing multiple chess games at once and making decisions quickly. A chess simultaneous can be a competitive or exhibition event, and is often used by grandmasters or high-level players as a way to demonstrate their expertise and skills. It requires both mental and physical stamina, and can sometimes last for several hours. This type of event is also known as a "simul".