🧠 Arrbiterrr! (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: e4 e5 2. Nf3 Nf6 3. d4 exd4 4. Nd5 Bc5 5. Bc4 0-0 * And the answer is... White's move 4. Nd5 is illegal because the Knight cannot jump there from f3, and the other Knight is still on b1.