?! Better was 8 Be3 0-0-0 9 Qe2, evacuating the Queen from the d-line.
8... O-O-O 9. Nb1c3 Qd6g6
! Black opens the roentgen d8-d1 and creates the threats of Bh3 and Bg4. Black's Queen is safe on g6 as White does not have the light-squared bishop. 9... h5 was played in Brekken - Pyernik 1982.
10. Bc1f4
? Better was 10 Be3, defending the Knight N/d4.
10... c5
? Black starts the combination with the wrong move-order. The winning continuation was 10...Bh3! 11 Bg3 (11 Qf3 Bxg2 12 Qxg2 Rxd4) h5!
11. Nd4f3
?? The worst square to retreat. Better was 11 Nb3 Bh3 12 Qf3 Rd3 13 Be3 Bg4 14 Qf4 Nf6! with an equal game.