Repeat first four moves on either side.
P to Q 3 B takes Kt
5. -------- 9. ------------
B to B 4 Kt P takes B
P to B 3 Kt takes P
6. ------------ 10. ----------
Q to K 2 (!) Kt takes P
Castles R to K sq.
7. ------- 11. ----------
Castles P to K B 4
P to Q 4 Kt to Q 2
8. --------- 12. ---------
B to Kt 3 Q to B 3
Even game.