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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:
a3 c5 2. b4 cxb4 3. axb4 e6 4. Ba3 Nf6 5. Bxf8 Kxf8 6. Nc3 g6 *
And the answer is...
White's move 5. Bxf8 is illegal because the Bishop is blocked by the pawn on b4.