[Event "87th ch-BRA 2021"]
[Site "Cuiaba BRA"]
[Date "2021.10.31"]
[Round "5.26"]
[White "Costa, Kerginaldo Brito da"]
[Black "Carstens Dobuchak, Thiago"]
[Result "0-1"]
[WhiteElo "1926"]
[BlackElo "2179"]
[ECO "B50"]
[Opening "Sicilian Defense: Delayed Alapin Variation, with d6"]
[PlyCount "80"]

1.e4 c5 2.Nf3 d6 3.c3 Nf6 4.Bc4 Nc6 5.d3 a6 6.a4 Bg4 7.O-O e6 8.Nbd2 Be7 9.Re1 Ne5 10.Qe2 Nxc4 11.Nxc4 b5 12.Ne3 Bh5 13.h3 Rb8 14.Nf1 d5 15.e5 Nd7 16.Ng3 Bg6 17.axb5 axb5 18.d4 c4 19.Nh2 Qb6 20.Be3 O-O 21.Qg4 b4 22.h4 bxc3 23.bxc3 f5 24.exf6 Nxf6 25.Qh3 Ne4 26.Nxe4 Bxe4 27.Bg5 Bxg5 28.hxg5 e5 29.Rad1 exd4 30.Rxd4 Qb2 31.Qe3 Rb3 32.Rxc4 dxc4 33.Qxe4 Qxf2+ 34.Kh1 Rxc3 35.Rf1 Qc5 36.Qe6+ Kh8 37.Rxf8+ Qxf8 38.Nf3 Rxf3 39.gxf3 Qxf3+ 40.Kh2 Qh5+ 0-1