Smart People Play Chess
right? And not just with other people. This trope is about how frequently in works of fiction where two characters are playing chess, it is frequently brought to an abrupt end where one character declares checkmate, much to the surprise of the other, frequently after the other player has declared check themselves. In reality this only happens when one player is significantly more skilled than the other, and such is hardly the implication when this is shown to happen.
Only example i have right now is the 1998 Avengers movie where Steed is playing against Emma and he confidently declares check moments before she comes over to the board and declares checkmate