Autoplay:
Autoplay:
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Be7 5.O-O O-O 6.Nbd2 d6 7.a4 h6 8.c3 Nh7 9.a5 a6 10.d4 Ng5 11.d5 Nb8 12.Bd3 g6 13.Ne1 Nd7 14.c4 f5 15.exf5 gxf5 16.f4 exf4 17.Ndf3 Ne5 18.Bxf4 Ng6 19.Nd4 Bf6 20.Nec2 Nxf4 21.Rxf4 Be5 22.Rxf5 Bxf5 23.Nxf5 Rxf5 24.Bxf5 Qf6 25.Qd3 Rf8 26.Rf1 Kg7 27.b4 h5 28.Bc8 Qxf1+ 29.Qxf1 Bxh2+ 30.Kxh2 Rxf1 31.Bxb7 Rc1 32.Nd4 Rxc4 33.Nc6 h4 34.Bxa6 Rc2 35.Bd3 Rf2 36.Kg1 h3 37.gxh3 Nxh3+ 38.Kh1 Kf6 39.a6 Ra2 40.Bc4 Ra1+ 41.Kh2 Nf2 42.Be2? (42.a7! Ng4+ 43.Kg3 Ne5 44.Ba2!! Rxa2 45.Na5 White has a decisive advantage)
42... Ra2 43.a7 Ne4? (43... Nd3! equal chances, quiet position)
44.Na5 Rxe2+ 45.Kg1 Kf5 46.a8=Q Kg4 47.Nc4?? Re1+ 48.Kg2 Re2+ 49.Kf1 Ng3+ 50.Kg1 Re1+ 51.Kf2 Re2+ 52.Kg1 Re1+ 1/2-1/2