[Event "Moscow"] [Site "?"] [Round "0"] [White "Lilienthal"] [Black "Botvinnik"] [Result "1/2-1/2"] [ECO "E20"] [Opening "Nimzo-Indian Defence"] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. e3 O-O 8. cxd5 Nxd5 {In this Nimzo-Indian position Black has some compensation for White's Bishop pair in the form of a slight lead in development. Such a lead can always be best utilized by opening the position. It follows that it is usually very difficult to make use of a lead in development as compensation for Bishop pair, since they also carry most weight in an open position.} 9. Bd2 (9. c4 Ne7 10. Bd3 cxd4 11. exd4 Nf5 12. Bxf5 Qa5+ { with good play for Black since White's centre is vulnerable}) 9... Nc6 10. Bd3 cxd4 11. cxd4 e5 12. dxe5 (12. e4 Nf4 13. Bxf4 exf4 14. d5 Qh4+ 15. Kf1 Ne5 $36 ) (12. Ne2 exd4 13. exd4 Nxd4 14. Nxd4 Qh4+ 15. g3 Qxd4) 12... Nxe5 13. Be4 Nc4 $2 {Forcing the exchange of one of the White bishops, but at the same time showing how difficult it is to weigh up positional advantages against the other.} (13... Nf6 $1 14. Bb4 (14. Bc3 Qc7 15. Qd4 Nxe4 16. fxe4 f6) (14. Bc2 Nd3+) 14... Nxe4 15. Bxf8 Nd3+ 16. Kf1 Nef2 17. Qc2 Nxh1 $17) 14. Qc1 Nxd2 15. Qxd2 Nf6 16. Bd3 {White no longer has the bishop pair, but neither has Black any lead in development. The game is level. For our purpose no discussion of the rest of the game is called for} 16... Re8 17. Ne2 Qb6 18. Nd4 Nd5 (18... Qxd4 $4 19. Bxh7+ Kxh7 20. Qxd4 $18) 19. Be4 Nxe3 20. Qxe3 f5 21. O-O fxe4 22. fxe4 Rd8 23. Nf5 Qxe3+ 24. Nxe3 Be6 25. Rad1 Rxd1 26. Rxd1 Rc8 27. Nf5 Kf8 28. Nd6 Rc3 29. Nxb7 Rxa3 30. Nc5 Ke7 31. Nxe6 Kxe6 32. Kf2 g6 1/2-1/2