🧠 Returns Null (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: b3 e5 2. Bb2 f6 3. Nc3 f5 4. Bxe5 Nf6 5. Nf3 Nc6 * And the answer is... White's move 4. Bxe5 is illegal because the Bishop is blocked by the Knight on c3.