35... Kf8 36. Qe2 Qe7 37. Rad1 Rd6
As the game approaches its conclusion:
20... c4 21. Bc2 Nc5 22. b4 a5
RYBKA sacrifices a pawn to open lines and create counterplay on the queenside. HIARCS, however, maintains its composure and gradually builds a strong initiative on the kingside. 2022-12-16-hiarcs-rybka.pgn