12. Ng3 would have been better. The game turned on 17. Nxe7? A Zlochevskij vs Krasenkow, 1989  (D82) Grunfeld, 4.Bf4, 35 moves, 0-1 Page 218 of Burgess J Fedorowicz vs Shamkovich, 1980  (D85) Grunfeld, 27 moves, 0-1 From page 213 of Burgess; 5...Nh5?! and 9...0-0 kill the champ Euwe vs Alekhine, 1935  (D82) Grunfeld, 4.Bf4, 41 moves, 1-0 3 games