[Event "Paris"] [Site "Paris FRA"] [Date "1929.??.??"] [Round "8"] [White "Georges Koltanowski (?)"] [Black "Marcel Duchamp (?)"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [Variant "Standard"] [TimeControl "-"] [ECO "A50"] [Opening "Indian Defense: Normal Variation"] [Termination "Unknown"] [Annotator "lichess.org"] 1. d4 Nf6 2. c4 { A50 Indian Defense: Normal Variation } e6 3. Nc3 d6 4. e4 b6 5. f4 Bb7 6. Bd3 Nbd7 7. Nf3 e5 8. d5 g6 9. O-O exf4 10. Bxf4 Bg7 11. e5 dxe5 12. Nxe5 O-O 13. Qd2 Nxd5 14. Nxd7? { (-0.15 → -1.31) Mistake. Nxf7 was best. } (14. Nxf7 Rxf7 15. cxd5 Ne5 16. Be2 Qd6 17. Rad1 Qc5+ 18. Be3 Rxf1+ 19. Bxf1 Nc4 20. Bxc5 Nxd2 21. Rxd2 bxc5) 14... Nxf4?! { (-1.31 → -0.50) Inaccuracy. Bd4+ was best. } (14... Bd4+ 15. Kh1 Bxc3 16. bxc3 Nxf4 17. Rxf4 Qxd7 18. Rd4 Qe7 19. Re1 Qc5 20. Be4 Bxe4 21. Rdxe4 Rad8 22. Qf4) 15. Nxf8?? { (-0.50 → -5.98) Blunder. Be4 was best. } (15. Be4 Bxc3 16. bxc3 Bxe4 17. Rxf4 f5 18. Rxe4 fxe4 19. Qd5+ Rf7 20. Rf1 Qxd7 21. Qxa8+ Kg7 22. Qxe4 Rxf1+) 15... Bd4+ { Black wins. } 0-1