GCT Super Rapid & Blitz Croatia 2026 Round 4 continues in Zagreb with top players like Gukesh, Abdusattorov, Keymer, Firouzja, and Giri vying for top spots. 10-player double round-robin format adds complexity. Time control of 5 min + 2 sec per move intensifies pressure. Gukesh and Firouzja lead standings, but key games could shift momentum. Tight time control forces sharp decisions. Standout performances may redefine standings before final rounds.