🧠 Sharing Space (Illegal Move Exercise)

Illegal Move Exercise: The audio will lead you through a series of moves from the beginning of a game. Somewhere in there, a player will make an illegal move but the game will continue anyway. Find the illegal move. To learn more about Don't Move Until You See It and get the free 5-day Conceptualizing Chess Series, head over to https://dontmoveuntilyousee.it/conceptualization PGN for today's exercise: Nf3 Nf6 2. g3 d5 3. Bg2 Bd7 4. O-O Nbd7 5. d4 c5 6. dxc5 e6 * And the answer is... Black's move 4... Nbd7 is illegal because that square is already occupied by the light-squared Bishop.