[Event "Groningen"] [Site "?"] [Round "0"] [White "Hostalet Ferrer"] [Black "Karpov"] [Result "0-1"] [ECO "E38"] [Opening "Nimzo-Indian: Classical, 4...c5"] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. e3 { This passive reply doesn't mix well with White's last.} 5... O-O 6. a3 Bxc3+ 7. Qxc3 Nc6 8. Bd3 { To prevent ...Ne4, but now White will lose a tempo after an eventual ...dxc4.} 8... cxd4 9. exd4 d5 10. Ne2 dxc4 11. Bxc4 e5 {Karpov takes the initiative violently. Now 12.dxe5 Ne4 followed by 13...Qa5+ and ...Q or Nxe5 will embarrass White's king and queen.} 12. Be3 Ne4 13. Qb3 Qa5+ 14. Kf1 { Forced: if 14.Kd1 exd4 15.Nxd4 Rd8 or 14.Nc3 exd4.} 14... Nxd4 {With White covering the fork on d2, Karpov jumps in and eliminates a key defensive piece.} 15. Nxd4 exd4 16. f3 {This gets it over with, but White was trashed anyway, e. g. 16.Bc1 Be6 17.Bxe6 fxe6 18.Qxe6+ Kh8 and Black's rooks will join the party.} 16... dxe3 17. fxe4 Qd2 {White may not be immediately mated after 18.Be2, but Black can play moves like ...Be6, Qa5 and f5 and wine without much resistance.} 0-1