3D

1. Literally, a variation on traditional chess that involves multiple boards positioned at different heights. Another name for "three-dimensional chess." No, I'm not playing 3D chess with you—I can barely play regular chess! He's a professional chess player, so I'm sure he can play 3D chess no problem. Thanks, but I don't think I'm ready to graduate to 3D chess.

2. By extension, a very complicated or complex game, system, or strategy involving a deep understanding of the situation that one's opponents or adversaries lack. Everyone thinks he's an idiot for leaking that information, but he's just playing 3D chess. He's eight moves ahead of all of us. Coaching against him is like trying to play 3D chess. It's like 3D chess, trying to come with a strategy that will work against a team stacked with stars at every position.

1. Literally, to play a variation on traditional chess that involves multiple boards positioned at different heights. No, I'm not playing 3D chess with you—I can barely play regular chess! Coaching against him is like trying to play 3D chess.

2. By extension, to engage in a very complicated or complex game, system, or strategy involving a deep understanding of the situation that one's opponents or adversaries lack. Our CEO is always playing 3D chess to stay ahead of our competition.