🧠 Developelopelop (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.

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PGN for today's exercise:

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nxd4 5. Qxd4 Nc6 6. Qd1 e5 7. Nc3 d6 8. Bc4 Nf6 *

And the answer is...
Black's move 5...Nc6 is illegal because Black has already exchanged that knight on d4.