🧠🧠 Grob Grab (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. g4 d5 2. h3 h5 3. gxh5 e5 4. d3 Nc6 5. Nc3 Nf6 6. a3 Be7 7. Bd2 Be6 8. e4 Qd7 9. exd5 Nxd5 10. Nf3 O-O-O 11. Nxd5 Bxd5 12. c4 Bxh1 13. Qc2 Nd4 14. Nxd4 Qxd4 15. 0-0-0 e4 16. dxe4 Qe6 *

And the answer is...
Black's move 12... Bxh1 is illegal because there is a white Knight on f3, blocking the diagonal.