Coba jelasin Vierte Partie dari Johann Baptist Allgaier dong

1.e4 e5 2.Bc4 c6 3.Nc3 Nf6 4.d3 d5 5.exd5 cxd5 6.Bb5+ Nc6 7.Nf3 Bd6 8.Qe2 0-0 9.0-0? Nd4 10.Nxd4 exd4 11.Nd1 a6 [11...Qa5!] 12.Ba4 b5 13.Bb3 Re8 14.Qd2 Qe7 15.c3 dxc3?! [15...Qe5! 16.f4 Qh5] 16.Nxc3? d4 17.Nd5? Nxd5 18.Bxd5 Qe5 19.Bxf7+ Kxf7 20.f4 Qe3+ 21.Kh1 Bb7 22.Qc2 Qe2 23.Qb3+ Kf8 24.Rg1 Bxg2+ 0–1