🧠🧠 English Mate-in-One (Opening Exercise)

Opening Exercise: The audio will lead you through a series of moves from the beginning of a game. At a certain point, one player will make a mistake and it’ll be your job to find the move to punish it.

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PGN for today's exercise:
[White "Maxwells_Hammer"] [Black "Computer"] 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 Bb4 6. Bg5 O-O 7. g3 Qe7 8. Nb5 d6 9. a3 Ne5 10. axb4 *

And the answer is...
10... Nf3#