In the game I was following, (Zapata - Nogueiras, Thessaloniki Olympiad 1984) 10...c4 was played, so I deduced I should play 11.dxc5.

13.Nd4 is Styockfish but I do get it later and benefit from a mistake. Black should have castled and not captured because from the final position, 16...Bd6 17.Nxe5 Bxe5 18. Nc6 is a Zwischenzug.