Round 4 pushes toward the halfway point of the 45th Zalakarosi Sakkfesztivál. Aczél Gergely faces Alsina Leal Daniel in this Swiss-system battle where the pace matters. Nine rounds total means every win compounds. The 90-minute main time gives both players room to calculate, though the 30-second increment keeps things honest. Zalakaros continues to deliver competitive classical chess with real stakes attached.