This game between a great British player John Nunn and Gyula Sax, posibly the best male Hungarian player ever (Note- Judit Polgar, one of the Polgar sisters was posibly a better player in her time) was a battle of wits between a young an inexperienced Nunn and a Hungarian going onto greater things. The Hungarian takes advantage of over confident play by John and although John fights back trying to regain a semblance of equality Gyula attacks relentlessly.
1.g3 g6 2.Bg2 Bg7 3.c4 Nf6 4.Nc3 0-0 5.e3 d6 6.Nge2 e5 7.Rb1 c6 8.0-0 d5 9.cxd5 cxd5 10.d4 e4 11.a4 [11.Nf4~~ This was played in an earlier game between two unknown players which ended in a draw in 1958. It is posibly a better move targetting the weak d5 pawn.]
11...Nc6 12.b4 Bf5 13.Ba3 setting up a rather obvious threat.
13...Re8 [13...a6? 14.b5 axb5?! 15.Bxf8+/- ]
14.Nc1? The Knight on c3 looks very weak but how does Black take advantage?
14...Rc8! 15.Qd2?! Nxd4!! Whites position crumbles showing the need to defend all your pieces from an opening, one errant piece can cause disaster.
16.exd4? [16.Qxd4 Ng4 17.Qxa7 Rxc3 18.Bb2 Rc4 19.Bxg7 Kxg7=/+ with a slight edge to Black.]
16...e3!? 17.fxe3 Bh6!! [17...Rxc3? this just regains material advantage though Black still has a better position. 18.Qxc3 Bxb1-/+ ]
18.Re1 Ng4! Pilling up on the weakness on e3, its hard to see now how John defends this position it looks hopelessly lost despite the advantage of a piece for John, Gyula is threatening 19...Rxe3 when the natural looking reply 20.Rxe3 loses the Queen to 20...Bxe3+.
19.Nd3?? [19.Rb3-/+ ]
19...Rxe3 20.Nxd5 Rxd3!? Now John has lost his piece advantage in material and is under severe pressure although this looked inevitable from the number of posibilities on for Gyula in the game after 16. exd4?
21.Qa2 Ne3?! Be6 was a better reply. [21...Be6! 22.Rxe6 fxe6 23.Nf4 Qxd4+ 24.Kh1 Rd1+ 25.Bf1 Qe4+ 26.Ng2 Rcc1 27.Rxc1 Bxc1 28.Kg1 Qd4+ 29.Qf2 Qxf2+ 30.Kh1 Rxf1# ]
22.Bc1 Rc2!! 23.Ne7+!! John comes out fighting but its not enough Gyula last move was just too powerfull to recover from.
23...Qxe7? [23...Kg7 24.Nxf5+ gxf5 25.Rb2 Rxc1!! 26.Rxc1 Qxd4 27.Rf2 Ng4 28.Qa1! Pinning the Queen. 28...Nxf2 29.Qxd4+ Rxd4 30.Rc5 (30.Kxf2?? Bxc1-+ ) 30...Ng4-+ and Black has too much material to draw.]
24.Qxc2!? Nxc2 25.Rxe7 Rd1+ 26.Kf2 Bxc1 still Gyula can throw away the win in this position by some slack play, despite all the great moves!!! [26...Rxc1?? 27.Rxc1 Bxc1 28.Bd5 Nxb4 29.Bxf7+ Kf8 30.Rxb7 a5= ] 0-1