Becerra found the nice blow 28....Nxf4! After 29.gxf4 Qh4 30.Ke3 (30.Kf3 Bg4 or 30.Kg2 Be4 are even worse) 30.... Qg3 31.Bf3 it seemed as if everything was safe and cozy for white, however Julio found another nice tactic that leads to a totally won position....
(Black to move and win)
Click here to see what Julio played