1.d4 Nf6
2.c4 e6
3.Nf3 d5
4.Nc3 c5
5.cxd5 Nxd5
6.e4 Nxc3
7.bxc3 cxd4
8.cxd4 Nc6
9.Bc4 b5!
[9...Bb4+ 10.Bd2
Bxd2+ 11.Qxd2
0-0 12.0-0
b6 13.Rad1!
Bb7 14.Rfe1!
Rc8 15.d5!
Spassky-Petrosjan (19)/WM Moskau/1969/1-0/24/]
10.Bd3 [10.Be2!
Bb4+ (10...Be7
11.0-0 a6
12.a4 b4
13.d5+/- Polugajevsky;
10...Bd6 11.0-0
a6 12.a4
b4 13.d5
(13.e5 Be7
) 13...exd5 14.exd5
Ne7 Purdy) 11.Bd2
Bxd2+! 12.Qxd2
a6 13.a4
b4 14.0-0
0-0 15.d5!
+/=/+/- Polugajevsky; 10.Bxb5??
Qa5+-+ ] 10...Bb4+
11.Bd2 [11.Ke2?!=/+
Kotov-Purdy,J/Sydney/1963/] 11...Bxd2+
12.Qxd2 a6
13.a4 0-0
14.Qc3 [14.axb5
Nxd4 15.Nxd4
Qxd4= Purdy; 14.e5?!
Bb7= Purdy] 14...Bb7!
15.axb5 axb5
16.0-0 [16.Bxb5
Rxa1+ 17.Qxa1
Qb6= Purdy; 16.Rxa8
Qxa8 17.Bxb5
Na7= Purdy]
16...Qb6 17.Rab1
[17.Rad1 /\ 18.Bb1
Timman]
17...b4 18.Qd2
[18.d5 exd5
19.exd5 bxc3
(19...Qa5 20.Qb3
(20.Qc4? Ba6!
; 20.Qd2!+/- Purdy)
20...Ne7 21.d6
Nd5 22.Bc4
Rad8=/+ Purdy; 19...Qd8
20.Qc2! Qxd5
21.Bxh7+ Kh8
22.Be4 Qb5
23.Rfe1+/- Gligoric) 20.Rxb6
Na5 21.d6
Bd5!= Byrne]
18...Nxd4 [18...Rfd8
19.d5 exd5
20.exd5 Rxd5??
21.Bxh7++- ]
19.Nxd4 Qxd4
20.Rxb4 Qd7
21.Qe3 [21.Rfb1?
Ba6 Timman]
21...Rfd8 [21...Ra3
22.Rd4 Timman]
22.Rfb1
Qxd3
23.Qxd3
Rxd3
24.Rxb7
g5
25.Rb8+
Rxb8
26.Rxb8+
Kg7
27.f3
Rd2
28.h4
h6
29.hxg5
hxg5
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