[Event "World Championship 25th"]
[Round "20"]
[Site "Moscow"]
[Date "1963.05.15"]
[White "Botvinnik, Mikhail"]
[Black "Petrosian, Tigran V"]
[Result "1/2-1/2"]
[ECO "D25"]
[Opening "QGA, 4.e3"]
 1. d4   d5
 2. c4   dxc4
 3. Nf3  Nf6
 4. e3   c5
 5. Bxc4 e6
 6. O-O  a6
 7. Bb3  Nc6
 8. Qe2  cxd4
 9. Rd1  Be7
10. exd4 Na5
11. Bc2  b5
12. Nc3  Bb7
13. Bg5  O-O
14. Rac1 Rc8
15. Bb1  Nc4
16. Ne5  Nb6
17. Qd3  g6
18. Bh6  Re8
19. Qh3  Nc4
20. Nxc4 Rxc4
21. Ne2  Qb6
1/2-1/2