[Event "Breslau"] [Site "?"] [Round "0"] [White "Tarrasch"] [Black "Berger"] [Result "1-0"] [ECO "C70"] [Opening "Spanish: 4.Ba4"] {A classic exampe of the weakness of a doubled pawn} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Bb4 6. Nd5 Be7 7. d3 d6 8. Nb4 Bd7 9. Nxc6 Bxc6 10. Bxc6+ bxc6 11. O-O O-O 12. Qe2 c5 13. c3 {Intending Pd4. This will admittedly afford his opponent a chance to rid himself a chance to rid himself of the doubled pawn, but against this White will retain a formidable advantage in freedom of movement. In addition to this method - preferred by Tarrasch - White has the option of a different system which is really more appropriate to the pawn formation, and which originated with Stenitiz. His scheme Nd2-c4-e3 : suprisingly modern looking play} 13... Nd7 14. d4 exd4 15. cxd4 Bf6 { A good move, reanimating the Bishop} 16. Be3 (16. d5 Rb8 { Suddenly his pieces are working together like parts of a well-oiled machine}) 16... cxd4 17. Bxd4 Re8 18. Qc2 {The Black doubled pawn has vanished, it is true, but its after-effects will be felt for a very long time. As a result of the method employed by White, the c-pawn will be a constant target} 18... Bxd4 $2 (18... c5 19. Bxf6 Qxf6 20. Nd2 Rab8 {the mobility of the Black pieces would compensate to some extent for White's positional advantage}) 19. Nxd4 Nc5 20. f3 Qf6 21. Rfd1 Reb8 22. Rab1 a5 {preventing Pb4 for the time being} 23. Kh1 {A tactical intermezzo} 23... Rb6 {The rook is vulnerable here} (23... -- 24. e5 Qxe5 25. Nc6 {Black doesn't have Qe3+}) (23... Rb7) 24. Ne2 Ne6 25. Nc3 Rc6 $2 (25... Qd8 26. Nd5 Rb7 {(Tarrasch and Steinitz)}) 26. Qa4 Rc5 27. Nd5 Qd8 {Any other Queen move allows Pb4} 28. Rbc1 Rxc1 29. Rxc1 c5 {From doubled pawn, via weak pawn, to backward pawn A radical cure for the weakness of the c-pawn, which however, only transfers the weakness to the d-pawn. This is a back ward pawn of the worst kind. It is the logical result of White's plan of playing all the time against the weakness which began with the doubled pawn. The weakness of a backard pawn consists in the fact that it is fixed and cannot possibly be protected by another pawn. The result in the present case is that White has full control of the central support pointd5} 30. Rd1 Nd4 { This screening of the d-pawn is only temporary, since the Knight can be driven back by Nc3-e2} 31. Qc4 Rb8 32. b3 Rc8 $2 (32... Qd7 {counterplay with ... Pa4} ) 33. Rxd4 $1 cxd4 34. Ne7+ (34. Qxc8 $2 Qxc8 35. Ne7+ Kf8 36. Nxc8 d3 $19) 34... Qxe7 35. Qxc8+ Qf8 36. Qxf8+ Kxf8 {Suddenly a second pawn has made its appearance in the Black game - this time an isolated doubled pawn, of whose weakness there can be no doubt} 37. Kg1 Ke7 38. Kf2 d5 39. e5 (39. exd5 Kd6 40. Ke2 Kxd5 41. Kd3 {Create an out side passed pawn to divert the King ... principle of two weaknesses}) 39... Ke6 40. Ke2 $1 {Essential} (40. f4 g5 41. g3 gxf4 42. gxf4 Kf5 {White weakness} 43. Kf3 d3 $19) 40... Kxe5 41. Kd3 h5 42. a3 h4 43. b4 axb4 44. axb4 Kd6 45. Kxd4 Kc6 46. b5+ $2 (46. f4 $1 Kd6 (46... g6 47. b5+ Kxb5 48. Kxd5 $18) 47. b5 {two weaknesses}) 46... Kxb5 47. Kxd5 Kb4 $1 48. Kd4 Kb5 49. Ke5 Kc4 50. Kf4 Kd4 51. Kg4 Ke5 $2 (51... Ke3 52. Kxh4 Kf2 53. Kh3 g5 $1) 52. Kxh4 Kf4 53. Kh5 Kf5 54. g3 Kf6 55. Kg4 Kg6 56. Kf4 Kf6 57. Ke4 Ke6 58. Kd4 Kd6 59. Kc4 Kc6 60. f4 Kd6 61. Kd4 Ke6 62. Kc5 Ke7 63. Kd5 Kd7 64. Ke5 Ke7 65. f5 f6+ 66. Kd5 Kd7 67. h4 Ke7 68. Kc6 Ke8 69. Kd6 Kd8 70. Ke6 Ke8 71. h5 Kf8 72. h6 1-0