The TurnNone

The TurnNone in chess refers to a situation where a player makes a move without changing the turn, which is generally not allowed in standard play. Usually, players alternate turns to make their moves, but if a move doesn’t result in the opponent taking their turn, it might be a "turnnone" situation. This can occur due to a rule violation, an illegal move, or a game glitch. In official chess, each move must be followed by the opponent’s response, so "turnnone" disrupts the normal flow of the game and indicates an error or irregularity.