[Event "13th Pilsen A GM 2025"]
[Site "Plzen CZE"]
[Date "2025.03.18"]
[Round "5.5"]
[White "Otsuka, Shou"]
[Black "Mattenberger, Matthias"]
[Result "1-0"]
[WhiteElo "2323"]
[BlackElo "2338"]
[ECO "B51"]
[PlyCount "83"]

1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.c4 e5 5.Nc3 Ne7 6.d3 a6 7.Ba4 Nc6 8.Bxc6 bxc6 9.O-O Be7 10.Ne1 O-O 11.f4 exf4 12.Bxf4 f5 13.exf5 Rxf5 14.Nc2 Nf8 15.Bg3 Ng6 16.Qe2 Qd7 17.d4 cxd4 18.Nxd4 Rxf1+ 19.Rxf1 Bb7 20.Nf5 Bf8 21.Ne4 d5 22.Nh6+ Kh8 23.Nf7+ Kg8 24.Nh6+ Kh8 25.Nf7+ Kg8 26.Neg5 h6 27.Qd3 hxg5 28.Qxg6 Bc5+ 29.Kh1 Rf8 30.Nh6+ Kh8 31.Nf7+ Kg8 32.Nh6+ Kh8 33.Rxf8+ Bxf8 34.Nf7+ Kg8 35.Nh6+ Kh8 36.Nf7+ Kg8 37.Nxg5 Bc5 38.Qh7+ Kf8 39.Qh8+ Ke7 40.Qxg7+ Ke8 41.Qg6+ Kd8 42.Ne6+ 1-0