Jean Defuse: ...
There are only three previously played examples with <6.cxd5> (in my DB) White always won...
[Event "Match Ghent v Terneuzen"]
[Site "Ghent"]
[Date "1929.04.29"]
[Round "1.10"]
[White "Kaan, JJ"]
[Black "Neumann"]
[Result "1-0"]
[ECO "D50"]
[EventDate "1929.??.??"]
[Source "Ter Neuzensche Courant 10-05-1929"]
1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 h6 5. Bxf6 Qxf6 6. cxd5 exd5 7. Nxd5 Qc6 8.
Nc3 Bb4 9. Rc1 Ba5 10. e3 Be6 11. Qc2 Bxa2 12. Ra1 Bxc3+ 13. Qxc3 Qxc3+ 14.
bxc3 Bd5 15. f3 f5 16. Bb5+ c6 17. Ba4 b5 18. Bc2 O-O 19. Ne2 Re8 20. Bxf5 Rxe3
21. Rc1 Bc4 22. Rc2 a5 23. Kf2 Re7 24. Re1 a4 25. Nf4 Rxe1 26. Kxe1 a3 27. Rc1
a2 28. Ra1 Na6 29. Kd2 Re8 30. Kc2 g5 31. Bd7 Re7 32. Bc8 gxf4 33. Bxa6 Re2+
34. Kc1 Rxg2 35. Bb7 Bd3 36. Bxc6 Rc2+ 37. Kd1 Rxh2 38. Bd5+ Kg7 39. Rxa2 Rh3
40. Ra7+ Kg6 41. Ra6+ Kg5 42. Rb6 Rh1+ 43. Kd2 Bf1 Arbitrated as won for
white. 1-0
.
[Event "40-board simultaneous exhibition"]
[Site "Goteborg"]
[Date "1935.04.05"]
[White "Alekhine, Alexander A"]
[Black "Lindberg, T"]
[Result "1-0"]
[ECO "D50"]
[EventDate "1935.04.05"]
[Source "S&V - Alekhine's Games 1902-46"]
1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 h6 5. Bxf6 Qxf6 6. cxd5 exd5 7. Nxd5 Qd6 8.
Nc3 c6 9. Nf3 Be6 10. e4 Nd7 11. Bd3 Nb6 12. O-O Be7 13. d5 cxd5 14. Bb5+ Kf8
15. Nd4 dxe4 16. Nxe4 Qd5 17. Nxe6+ Qxe6 18. Re1 Rd8 19. Qf3 Qd5 20. a4 a6 21. Rad1 Qe5 22. Ng5 Qxe1+ 23. Rxe1 hxg5 24. Qxb7 1-0
.
[Event "Nice Tournament B"]
[Site "Nice"]
[Date "1938.09.10"]
[White "Delannoy, Jules"]
[Black "Levacher, A"]
[Result "1-0"]
[ECO "D50"]
[Source "ChessBase"]
1. c4 e6 2. Nc3 Nf6 3. d4 d5 4. Bg5 h6 5. Bxf6 Qxf6 6. cxd5 exd5 7. Nxd5 Qd8 8.
e4 c6 9. Nc3 Qa5 10. a3 Be7 11. Bc4 O-O 12. Nge2 Bg4 13. O-O Rd8 14. Qb3 Qh5
15. Nf4 Qg5 16. Bxf7+ Kh7 17. Nce2 Qf6 18. e5 1-0
...