[Event "Baden-Baden"]
[Site "?"]
[Date "1925.??.??"]
[Round "?"]
[White "Alekhine"]
[Black "Colle"]
[Result "1-0"]
[Annotator "03: Two Bishops V Two Knights"]
[ECO "D07"]
[PlyCount "115"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. d4 d5 2. c4 Nc6 3. Nf3 Bg4 4. Qa4 Bxf3 5. exf3 e6 6. Nc3 Bb4 7. a3 Bxc3+ 8. bxc3 Ne7 9. Rb1 Rb8 { This position occured twice between Alekhine and Colle } 10. Bd3 $1 { (improvement according to Alekhine) } ( 10. cxd5 Qxd5 11. Bd3 O-O 12. O-O Qd6 13. Qc2 Ng6 14. f4 Nce7 15. g3 Rfd8 16. Rd1 b6 17. a4 Nd5 18. Bd2 c5 { Alekhine-Colle, Paris 1925 } ) 10... dxc4 $2 ( 10... O-O { Black should try to
keep a pawn on d5 to prevent the opening of the long dark diagonal. It would
then be by no means easy for White to get any play for this dark squared
bishop. An eventual Pa4 and Ba3 would have the disadvantage that the a-pawn
would become a target. } ) 11. Bxc4 O-O 12. O-O Nd5 13. Qc2 ( 13. Qb3 Na5 14. Qa2 Nxc4 15. Qxc4 ) 13... Nce7 14. Bd3 h6 15. c4 Nb6 16. Rd1 Nbc8 17. f4 { Here White is employing the Steinitz method, which consists of advancing ones
own pawns to deny the opposing pieces any support points.  In this case White
must go to work cautiously, in view of his own vulnerable centre. The advance
Pc5 for instance would not be considered because it would give an unassailable
strong point at d5 for Black. White's tactics must be based on an eventual
advance of Pd5 or Pf5, giving up a pawn if need be. Notice the Black has to
maintain a completely passive attitude since his only freeing move ... Pc5,
would lead to an opening ot the position which would favour the Bishop pair. } 17... b6 18. Bb2 c6 { The breakthrough squares, d5 and f5 are now protected as well as possible } 19. Qe2 Nd6 20. Qe5 Ne8 21. a4 Rb7 22. Re1 Nf6 23. Rbd1 Rd7 24. Bc2 a6 ( 24... Qc7 25. Qe2 Qxf4 ( 25... Rfd8 26. d5 cxd5 27. Bxf6 gxf6 28. Qg4+ Kf8 { Black now has this f8 flight square } ) 26. Qe5 Qxe5 27. dxe5 Rxd1 28. Rxd1 Nh7 29. Rd7 ) 25. Qe2 Qb8 ( 25... Re8 ) 26. d5 $1 { The long waitied breakthrough } 26... cxd5 27. Bxf6 gxf6 28. Qg4+ Kh8 { The end of the game is not apposite to our theme; nevertheless, it isinstructiv
e to see how the advantage obtained is converted into a win. } 29. f5 $1 Nxf5 ( 29... -- 30. Qh4 Kg7 31. Re3 ) 30. Bxf5 exf5 31. Qxf5 Qd8 32. cxd5 { The balance sheet can now be drawn up. White has a passed pawn which limites
the activity of the Black pieces; moreover Black's Kingside is irreperably
weak. The Bishop pair has paid good dividends. In what follows we shall see
how White utlilizes every detail of the position to increase his advantage. } 32... Rd6 33. Qf4 Kh7 34. Qe4+ Kh8 35. Qe3 Kg7 36. Qd3 { Forces the
pawn move, which considerably devalues Black's Queenside pawn majority. } 36... a5 37. Re3 Rg8 38. Rh3 Qd7 39. Qe3 f5 { A new weakness } ( 39... Rh8 40. Qf4 Rxd5 41. Rg3+ Kf8 ( 41... Kh7 42. Qe4+ ) 42. Qb8+ ) 40. Rg3+ Kh7 41. Rxg8 Kxg8 42. Qg3+ Kh7 43. Qb3 Kg7 44. h3 { Before White undertakes the decisive
action, it is necessary to provide the king with a flight square. } 44... Qd8 45. Qg3+ Kh7 46. Qe5 Qd7 47. Rd3 f6 { Yet another weakening, which was
hardly to be avoided since Black is more or less in Zugzwang. } ( 47... Kg8 48. Rg3+ Rg6 49. d6 Rxg3 50. fxg3 Qxa4 51. Qe7 $18 ) 48. Qd4 Qd8 49. Qc4 Qd7 50. Rd4 Kg7 51. Qd3 Kf7 ( 51... Qc8 52. Qg3+ ) ( 51... Qe7 52. Qxf5 Qe1+ 53. Kh2 Qe5+ 54. Qxe5 fxe5 55. Rd1 Kf6 56. Kg3 $16 ) ( 51... Kh7 52. g4 Kg6 53. gxf5+ Qxf5 54. Rg4+ $18 ) ( 51... Kh8 52. Qe3 Rxd5 53. Qxh6+ Kg8 54. Qg6+ Kf8 55. Qxf6+ ) ( 51... Kf8 52. Qe3 Kg7 ( 52... Rxd5 53. Qxh6+ Ke7 54. Qg7+ Ke6 55. Qg8+ ) 53. Rh4 ) 52. g4 Kf8 ( 52... fxg4 53. Qh7+ Kf8 54. Qxh6+ Kf7 55. Rxg4 $18 ) 53. gxf5 Qe8 54. Re4 Qh5 55. Rg4 Qf7 56. Qe3 Qh7 57. Rg6 h5 58. Qc3 1-0