Black steers towards the solid but passive Philidor Defence.4. Nf3
I had played the Philidor many times but this was the first time I faced this aggressive move. White goes straight for the jugular. The move was known by theory and considered reasonable for Black.6... O-O 7. Bxf7+ Rxf7 8. Ne6 Qe8 9. Nxc7 Qd8 10. Nxa8
White wins material but Black has an early lead in development.10... b6 11. Be3 Bb7
Kuznekov is planning to hang on to his material advantage and play f3.13... axb6 14. f3 Bb4!?
Threatening to double pawns and use moves like ...Qc8, ...Ba6, ...Nc5 and ...Rc7 to create counterplay.15. Bd2?!
Threatening Qh4. Kuznekov now spent twenty minutes deciding between Qe2 and the risky 0-0.16. O-O
Adding a new diagonal to the attack. White cannot put his rook on e1 since it prevents the Bishop from going there in response to ...Qh4.18. Ne2
The only move to keep the material balance.18... Ndf6!
An unintuitive move which wins by force. The threat is ...Rd7, and since e2 and d2 are threatened White's response is forced.19. Qe1 Nxe4
It's all over now.20. fxe4 Rxf1+ 21. Qxf1 Qxd2 0-1