[Event "Bath"] [Site "?"] [Round "0"] [White "Petrosian"] [Black "Lombard"] [Result "1-0"] [ECO "E12"] [Opening "Queen's Indian: Petrosian"] 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 {Petrosian w as the first to use this system regularly as White, but now it is more closely associated with the Kasparov name.} 7. e3 Nd7 8. Nxd5 exd5 9. Bd3 Bd6 10. Qc2 { Notice how the White queen and bishop form a powerful battery against the Black kingside.} 10... h6 11. b4 a6 12. O-O O-O 13. Rb1 Qe7 14. a4 Nf6 15. b5 axb5 16. axb5 {White has given Black a backward c-pawn.} 16... Ne4 17. Bb2 Ng5 18. Ne5 {White stands better due to his more active bishops.} 18... Bxe5 19. dxe5 d4 {Black thinks that the opening of the a8-h1 diagonal is worth the investment of a pawn. But Petrosian simply ignores the offering and maintains the initiative instead. A valuable lesson in the relative merits of the two!} 20. f4 {Stopping Black's trick of Nf3+ and Qg5.} 20... Ne6 21. f5 Qg5 22. fxe6 Qxe3+ 23. Qf2 {Black resigned as after 23...Qxd3 24. exf7+ Kh8 25. e6 as he has no good way of stopping the White pawns. Otherwise he is just a piece down. } 1-0