<< Part 1

Thus, we considered the following variations of the twelfth move for White: N ge2, B e3, B d2 and N h3. In all these cases, Black gets the equal position without any special problems. Later we see that White gets an initiative after 12. dc. It is therefore, 12. dc is the best option for White. The game continues: 12. ... Q x c5 13. B e3 Q c4 Thus, we get the following position after 13. … Q c4:

Black suggests the queen exchange by moving 13. Q c4. White has three options now. The first one is that White lets Black to initiate the queen exchange. This option appears if White leaves the queen in the d3 square or moves it to the square where the Black’s queen may take it. The second one is to avoid the queen exchange by moving it to the square where the Black’s queen can’t take it. And third one is to initiate the queen exchange itself by taking the Black’s queen.

Let us consider first option. If White leaves the queen in the d3 square Black takes it and gets the equal endgame. For example, 14. h5 Q x d3 15. cd e6 16. N h3 N c6 17. d4 B d6.  => 

If 14. 0-0-0 then 14. … Q x d3 15. R x d3 e6! 16. N h3 N c6 17. R d1 Be7.  => 

If 14 N h3 then 14. … Q x d3 15. cd e6 16. h5 N c6 17. d4 B d6.  => 

If 14. K f2 then 14. … Q x d3 15. cd e6 16. N e2 B e7 17. h5 R d8 18. R d1 N c6.  => 

Thus, we see, in all the cases, Black does not experience any problems to make position equal.

Now let us consider the cases when White moves the queen where Black may take it. In the case of 14. Q d4 the game may continue: 14. … Q x d4 15. B x d4 N c6 16. B x f6 ef 17. N x d5 R e8 + 18. K f1 R d8 19. R d1 N b4 20. c4 N x a2 21. R a1 N b4 22. R x a7 N x d5 23. cd R d7 24. N e2 B c5 25. R a5 R x d5 26. b4 R d1 + 27. K g2 R x h1 28. K x h1 B b4 29. R b5 B e7 30. R x b7 h5 and we get the position with the equal chances.  => 

It’s bad for White 18. K d2 because: 18. K d2 R d8 19. c4 b5 20. b3 bc 21. bc N e5 22. R c1 B b4+ 23. K e2 R he8 24. K f1 B a3 25. R c2 N x c4 26. R x c4 R x d5 27. R e4 R d1+ 28. K g2 R d2+ 29. K f1 R b8 30. f4 R bb2 31. N e2 B c5 32. h5 R x a2 33. g5 f5 34. g6+ K f6 35. R e8 R dc2 36. R h3 R a1+ 37. K g2 R g1+ 38. K h2 R e1 39. R c3 R x c3 40. N x c3 R x e8 41. N d 5+ K e6 42. N c7 + K d7 43. N x e8 K x e8 and Black wins.  => 

If 19. N c3 then 19. … h5 20. gh N e7 21. N ge2 N f5 22. N e4 R x h5 23. K f2 R x h4 24. R x h4 N x h4 25. c3 B e7 26. N d4 g5 27. f4 gf 28. R h1 f5 29. N d2 R g8 30. N c4 R g3 31. N e5 + K e8 32. R h2 B f6 33. N ef3 N x f3 34. N x f3 K e7 35. a4 a5 36. R h7 + B g7 37. N h4 K e6 38. R h5 R d3 39. N x f5 B f6 40. N d4 + B x d4+ 41. cd b6 42. R h6 + K f5 43. R x b6 K g4 44. R g6 + K f5 45. R b6 f3 46. K e1 R x d4 47. R b5 + K e4 48. R x a5 R c4 49. R b5 R c1 + 50. K f2 R c2 + 51. K e1 R c1 + 52. K f2 R c4 53. K g3 R x a4 54. R b6. And no problems for Black to get the equal game.  => 

The mistake for White is 19. N e3 because 19. … B c5 20. R e1 R d2 21. f4 B x e3 22. R x e3 R x c2 23. R hh3 R d8 24. R d3 R x b2 25. a3 f5 26. g5 h5 27. R x d8 N x d8 28. R d3 N e6 29. N f3 K e7 30. R e3 K d6 31. R d3+ K e7 32. R e3 K d6 33. R d3+ K c5 34. N e5 N x f4 35. N d7 + K b5 36. R c3 R d2 37. N e5 R d5 38. N f7 R d7 39. N e5 R d5 40. N f7 N g6 41. R c8 N x h4 42. N d8 g6 43. N e6 R e5 44. a4+ K x a4 45. N c5 + K b5 46. N x b7 R d5 and Black gets the absolutely winning position.  => 

The ”20. N c4” does not help for White: 20. N c4 b5 21. N a3 R d2 22. N e2 B x a3 23. ba R x c2 24. R c1 R x c1 + 25. N x c1 N e5 26. K f2 R d8 27. K g3 R d2 28. f4 N c4 29. a4 ba 30. K f3 N a3 31. g5 N b5 32. K e3 R c2 33. R d1 a3 34. R d7+ K f8 35. R d8+ K e7 36. R d1 h5 37. Re1 K f7 38. f5 fg 39. hg R g2 40. g6 + K f6 41. N e2 R g5 42. R c1 R x f5 and Black wins.  => 

If 19. c4 then 19. ... N e5 20. b3 b5 21. R d1 bc 22. K g2 cb 23. Ab and Black is not experiencing any problem to get the equal position.  => 

It’s bad for White 22. bc: 22. bc N x c4 23. K f2 B c5 + 24. K g3 N b6 25. N c3 R x d1 26. N x d1 N d5 27. N h3 R e8 28. R h2 B d6+ 29. f4 N c3 30. R h1 N x a2 31. K f3 R b8 32. N e3 R b3 33. R a1 B c5 34. R x a2 B x e3 35. K g2 f5 36. gf K f6 37. R a5 B b6 38. R d5 a5 39. N g1 a4 40. N e2 a3 41. R d1 a2 42. R a1 R a3 43. N c1 B e3 44. N x a2 B x f4 45. h5 B d6 46. R e1 R x a2 + 47. K f3 K x f5 and Black gets the absolutely winning position.  => 

It's bad for White 19. N c7 because 19. N c7 R d2 20. c4 B c5 21. N e2 R hd8 22. N d5 R x b2 23. N dc3 R dd2 24. R h2 B d4 25. R h3 R bc2 26. f4 B x c3 27. N x c3 R f2+ 28. K g1 N d4 29. R b1 b6 30. g5 N f3+ 31. R x f3 R x f3 32. N d5 R d3 33. R e1 R x c4 34. R e7+ K f8 35. R c7 b5 36. R x c4 bc 37. N b4 fg 38. hg R d2 39. f5 c3 40. f6 hg 41. a4 and Black wins.  => 

It is not good idea for White 19. N f4: 19. N f4 R d2 20. R c1 B c5 21. N d3 B b6 22. N e2 R c8 23. N c3 N e5 24. N x e5 + fe 25. h5 K e6 26. K e1 R g2 27. R f1 B e3 28. R d1 R x c2 29. R d3 B d4 30. N d1 R g2 31. R d2 R c2 32. R x c2 R x c2 33. f4 e4 34. R h1 B x b2 35. N e3 R c1 + 36. N d1 B d4 37. R h3 e3 38. K e2 R c2 + 39. K e1 e2 40. R d3 ed=Q+ 41. K x d1 R c4 and Black wins.  => 

It’s mistake for White 14. Q f5 because of a fork: 14. Qf5 d4 15. Bxd4 Qxd4.  => 

Now let us consider the second option when White avoids the queen exchange. For example, 14. Q d2. If so Black plays 14. ... e5. Now is big mistake for White 15. B f2: 15. B f2? d4 16. N ce2 B b4 17. c3 B a5 18. Q c2 N c6 19. Q b3 b5 20. O-O-O R hd8 21. Q x c4+ bc 22. cd Nb4 23. N h3 e4 24. fe R ab8 25. N c3 N d3+ 26. R x d3 cd 27. R d1 R bc8 28. R x d3 N x e4 29. B e1 B b6 30. K b1 R e8 31. N g1 N f6 32. N f3 N x g4 33. N b5 R cd8 34. a4 a6 35. a5 R d5 36. N c3 R x a5 37. d5 N e5 38. N x e5 + R x e5 39. R f3 + K e8 40. B g3 R e3 41. R x e3 + B x e3 42. b4 B d4 43. ba B x c3 44. h5 B x a5 45. K a2 B d8 46. K b3 K f7 47. B e5 g6 48. Hg + K x g6 49. K c2 a5 50. B d6 K f5 51. B c5 K e4 52. d6 h5 53. K d1 K d5 54. B a3 K e6 55. K e1 B f6 56. K f2 B e5 57. d7 K x d7 58. B c1 a4 59. K f1 K e6 60. K f2 B d6 61. B b2 K d5 62. K g2 h4 63. B c1 B e7 64. K f3 K c4 65. K e2 B d6 66. K e3 h3 67. K f2 K b3 68.  Kf3 B e7 69. B h6 a3 70. K g3 B d6+ 71. K x h3 B b4 72. B f4 a2 73. B e5 B c3 74. B x c3 K x c3 75. K g3 a1=Q and Black leads the game to its victory slowly by slowly.  => 

The ”26. K b1” move is still worse for White: 26. K b1 R x b2+ 27. K a1 B x c3 28. R b1 R x f2+ 29. R b2 R x b2 30. a3 R g2+ 31. K b1 R b8#. If 28. R x d3 then 28. R x d3 cd 29. a3 R c2 + 30. K b1 R b8 #.  => 

If 26. K c2 then 26. … R x b2 #.  => 

If 26. K d2 then 26. … R x b2 + 27. K e3 N x g4 + 28. K f3 N gxf2 29. N x f2 R x f2 + 30. K e3 B x c3 31. R x d3 cd 32. K x f2 B x d4 + 33. Kg3 and Black wins.  => 

The correct respond to 14. … e5 is 15. Q e2: 15. Q e2 Q c6 16. g5 hg 17. B x g5 B b4 18. O-O-O B x c3 19. bc N bd7 20. Q d3 N b6 21. c4 R ad8 22. cd R x d5 23. Q b3 a5 24. R x d5 N fxd5 25. N e2 R c8 26. B d2 N c4 27. h5 K g8 28. h6 N x d2 29. K x d2 g6 30. a4 K h7 31. N g3 Q d7 32. N e4 N f6 + 33. K c1 N x e4 34. fe Q e7 35. R d1 R c7 36. K b2 Q b4 37. Q x b4 ab 38. R h1 and we get the equal endgame. The “14. Q d1” move leads to this variation: 14. Qd1 e5 15. Qe2.  => 

If 14. Q e2 then 14. … Q x e2 15. N x e2 N c6 16. 0-0-0 e5 17. c3 R e8 18. N g3 e4 19. B f4 B c4 20. Fe N x e4 21. N h3 N x g3 22. B x g3 B e3 23. K b1 R e4 24. R x d5 R x g4 and Black gets the equal endgame.  => 

Thus, we see Black is not experiencing any problem to get the equal game in the first two option for White to respond to 13. … Q c4. Now we make it sure that the third option leads to a sharper fight. So, the game is going on:

            14. Q x c4       dc
             15. N ge2       e6
             16. 0-0-0       N c6
             17. R hg1       R e8  => 

The idea 17. … R e8 is to put the rock where it hits the e3 bishop in x-ray style. This prevents for White to win a pawn that is possible in the following cases: 17. R hg1 b6 18. g5 hg 19. hg N d5 20. N x d5 ed 21. R x d5.  => 

if 19. … N h5 then 20. N b5 g6 21. R g4 e5 22. R x c4 and White wins a pawn  => 

If 20. … a6 then 21. N c7 R b8 22. N x a6 and White wins a pawn.  => 

If 21. … R c8 then 22. B x b6 and White wins a pawn again.  => 

If 17. … R e8 then White can’t win a pawn: 17. R hg1 R e8 18. g5 hg 19. hg N d5 20. N x d5 ed 21. R x d5 R x e3.  => 

There might be 17. … a6: 18. B b6 N e5 19. g5 hg 20. hg N fd7 21. B d4 B e7 22. f4 N f3 23. R gf1 N x d4 24. N x d4 N c5 25. N f3 R ad8 26. R de1 R hf8 27. N e5+ K e8 28. N g6 R f5 29. b4 cb 30. ab R d4 31. N e2 R b4 32. N g3 R d5 33. N x e7 K x e7 34. f5 g6 35. fg R x g5 36. N f5 + K d7 37. R d1 + K c7 38. N e7 a5 39. R f7 R bg4 40. N f5 + K b8 41. N e7 K c7 42. K b2 a4 43. N f5+ K b8 44. N d4 K a7 45. b4 N e4 46. N f3 R d5 47. R x d5 ed 48. N e5 R g3 and we get the equal endgame. => 

Thus, game continues:

                18. a3         b6
                19. N f4    e5

Why does Black play 19. … e5 now? In this position, Black has no so many good moves that are possible to consider as a candidate for a nineteenth move. Let us consider all of them.

If 19. … K g8 then 20. N g6 R h7 21. h5 e5 22. R ge1 K f7 23. B f2 R e6 24. N b5 B e7 25. B g3 B c5 26. B x e5 and White wins a pawn. White should win in this variation.  => 

If 19. … N a5 then 20. h5 N c6 21. R ge1 R g8 22. B f2 e5 23. N g6 R e6 24. N b5 B e7 25. B g3 B c5 26. B x e5 and White wins a pawn. White should win in this variation.  => 

If 19. … N b8 then 20. h5 R g8 21. R ge1 N c6 22. B f2 e5 23. N g6 R e6 24. N b5 B e7 25. B g3 B c5 26. B x e5 and White wins a pawn. White should win in this variation.  => 

If 19. … N d8 then 20. h5 R g8 21. R ge1 N c6 22. B f2 e5 23. N g6 R e6 24. N b5 B e7 25. B g3 B c5 26. B x e5 and White wins a pawn. White should win in this variation.  => 

If 19. … N e5 then 20. g5 hg 21. hg N h5 22. N fe2 K g6 23. f4 N c6 24. N b5 e5 25. N c7 R d8 26. R x d8 N x d8 27. fe Nc6 28. N b5 N x e5 29. N x a7 B c5 30. B x c5 bc 31. Nb5 Nf3 32. Rf1 Nxg5 33. Nd6 Nf6 34. Nf4+ Kh7 35. Rh1+ Kg8 36. Rxh8+ Kxh8 37. Nxc4 and White wins a pawn. White should win in this variation.  => 

If 19. … N e7 then 20. h5 e5 21. N g2 g6 22. f4 N x g4 23. N e4 N f5 24. hg + K x g6 25. fe K h7 26. B f4 B e7 27. R d7 R d8 28. R x a7 R a8 29. R c7 R hc8 30. R d7 R d8 31. e6 R x d7 32. ed R g8 33. a4 B d8 34. B b8 N d4 35. R d1 N e6 36. B g3 R f8 37. B h4 N e5 38. B x d8 R x d8 39. R d5 N g4 40. R b5 N c7 41. R x b6 R x d7 42. a5 N a8 43. R e6 N c7 44. R b6 N a8 45. R b5 R e7 46. N d6 c3 47. a6 cb 48. R x b2 R e6 49. R b7 + K g8 50. R b8 + K h7 51. N f4 R f6 52. R b7 + K h8 53. R b8 + K h7 54. N d3 N c7 55. a7 R x d6 56. R b7 R d8 57. N f4 h5 58. N e6 R a8 59. N x c7 R x a7 60. R x a7 K g7 61. R a8 N f2 62. N e6 + K g6 and White wins. => 

If 26. … B g7 then 27. N h4 N x h4 28. R x g4 N f5 29. N d6 N x d6 30. ed R eg8 31. d7 B f6 32. R x g8 R x g8 33. R d6 K g7 34. B e5 B x e5 35. d8=Q R x d8 36. R x d8 K f6 37. R d7 h5 38. R x a7 h4 39. K d2 K f5 40. K e2 B x b2 41. K f3 b5 42. R a5 K e6 43. K g4 h3 44. K x h3 K d6 45. R x b5 B x a3 46. R h5 B c1 47. K g4 K c6 48. K f3 B a3 49. R a5 B b2 50. K e4 B c3 51. R f5 K b6 52. K d5 B a1 53. K x c4 K c6 54. R f3 B b2 55. R e3 B c1 56. R e6 + K d7 57. K d5 K c8 and White wins.  => 

If 30. … R hf8 then 31. d7 R d8 32. B c7 h5 33. R x c4 K h6 34. B x d8 R x d8 35. R c8 and White wins.  => 

If 26. … B c5 then 27. Nxc5 bxc5 28. Rd5 Rc8 29. Nh4 Nfe3 30. Rd7+ Kg8 31. Bxe3 h5 and White wins a pawn. White should win in this variation.  => 

If 27. … R a8 then 28. N h4 R hd8 29. R b7 R db8 30. R x b8 R x b8 31. N x f5 and White wins.  => 

If 28... N x h4 then 29. R x g4 R he8 30. R x h4 K g6 and White wins.  => 

There might be 19. … R d8: 19. N f4 R d8 20. R x d8 N x d8 21. h5 N c6 22. N g6 R g8 23. N b5 B e7 24. g5 hg 25. R x g5 N d5 26. N x e7 K x e7 27. B d2 K f8 28. R g6 N f6 29. B c3 N e7 30. R g5 N fd5 31. K d2 a6 32. N d6 g6 33. hg R x g6 34. R x g6 N x g6 35. N x c4 b5 36. N e5 N x e5 37. B x e5 and we get a drawish position.  => 

If 27... a6 then 28. N c3 N f6 29. B e3 b5 30. a4 ba 31. N e4 N x e4 32. fe N b8 33. B d4 K f7 34. R c5 N d7 35. R c7 K e7 36. R x c4 e5 37. B e3 a3 38. ba R h8 39. R a4 R x h5 40. R x a6 R h1 + 41. K b2 R e1 42. B g5 + K f7 43. R a7 K e6 44. R a6 + K f7 45. a4 R x e4 46. a5 and we get a drawish position.  => 

There might be 19. … g5 also: 20. hg hg 21. N fe2 Rg8 22. K b1 B e7 and Black gets the equal position.  => 

As we will see below 19. … e5 is most progressive move among all possible moves in this variation. Thus, the game is going on:

                20. N h5   N x h5
                21. gh       … => 

Why does Black plays 20. … N x h5 now? Again, it’s not so many options for Black here. Most of them leads to losing a pawn. Let us consider all of them.

If 20. … R d8 then 21. N x f6 gf 22. R x d8 N x d8 23. R d1 B e7 24. R d7 a6 25. B x b6 and White wins a pawn.  => 

If 21. … R x d1 then 22. R x d1 gf 23. R d7 + K e6 24. R c7 N d4 25. B x d4 ed 26. N e2 B c5 27. N f4 + K d6 28. R f7 a5 29. R x f6 + and White wins a pawn.  => 

If 21. … K x f6 then 22. R x d8 N x d8 23. R d1 K e7 24. N d5 + K e8 25. N c7 + K e7 26. H5 N c6 27. N b5 K e6 28. N c7 + K f6 29. R d7 B e7 30. N b5 R d8 31. R c7 N d4 32. B x d4 ed 33. R x c4 and White wins a pawn.  => 

If 23. … K e8 then 24. N e4 B e7 25. h5 N c6 26. N d6 + K f8 27. N f5 K e8 28. N x h6 and White wins a pawn.  => 

If 20. … R g8 then 21. N b5 B e7 22. N x f6 gf 23. R d7 K e6 24. R g d1 R d8 25. R c7 R c8 26. R dd7 R x c7 27. R x c7 N d4 28. N x d4 ed 29. B x d4 and White wins a pawn.  => 

If 27. … K d5 then 28. N x a7 and White wins a pawn again.

It’s not good idea for Black to play 20. … R e6. In this case, If White plays accurately it gets the winning endgame. For example, 21. N x f6 R x f6 22. R gf1 R d6 23. R de1 B e7 24. f4 R dd8 25. f x e5+ K e6 26. N e2 g5 27. Ng3 R df8 28. Nf5 gh 29. N g7+ Kd5 30. R d1 + K x e5 31. R fe1 K f6 32. N f5 R d8 33. B d2 Kf7 34. N x h6+ K e8 35. N f5 h3 36. N x e7 N x e7 37. R x e7+ K x e7 38. B g5 + K e6 39. B x d8 h2 40. R h1 R x d8 41. R x h2 R c8 42. R e2 + K d6 43. g5  and White gets the winning endgame.  => 

There might be 20. … B e7: 20. N h5 B e7 21. N x f6 K x f6 22. g5 + hg 23. N d5 + K f5 24. N x e7 + N x e7 25. B x g5 K e6 26. R ge1 R hf8 27. f4 R f5 28. R e4 b5 29. fe N d5 30. a4 a6 31. B d2 R ef8 32. R g4 R f1 33. R x g7 R x d1 + 34. K x d1 R f1 + 35. Be1 ba 36. R g6 + K x e5 37. K e2 N f4+ 38. K x f1 N x g6 39. K e2 N f4+ and we get the equal endgame. => 

If 23. B x g5 then 23. … K f7 24. R d7 Ke6 25. R gd1 R d8 26. R c7 R c8 27. R b7 R b8 28. R c7 R bc8 29. R b7 R b8 30. R c7 R bc8 and we have a three-fold repetition.  => 

Now Black develops the bishop:

                21. …        N d4
                22. R g4   B c5

Why does Black not develop the bishop at the twenty first move? If so then 21.... B c5 22. B x c5 bc 23. R d5 R hf8 24. R x c5 N d4 25. R c7 + K e6 26. R gxg7 N x f3 27. R g6 + K f5 28. R x c4 N d4 and White wins the two pawns and gets the winning position.  => 

If 23. ... Rc8 then 24. R x c5 N d4 25. R x e5 R he8 26. R a5 R c7 27. R d1 N e2 + 28. N x e2 R x e2 29. K b1 R e6 30. R f5 + R f6 31. R dd5 R x f5 32. R x f5+ K e6 33. R a5 and White wins the two pawns and gets the winning position again.  => 

If 25. … N x f3 then 26. R f5 + K e6 27. R x f3 and White wins.  => 

If 27. … N x f3 then 28. R f5 + K e6 29. R x f3 and White wins.  => 

If Black develops the bishop to the e7 square at the twenty first move then Black loses a pawn also: 21. ... Be7 22. R g4 R d8 23. R x d8 R x d8 24. R x c4.  => 

It is therefore, Black plays N d4 firstly and then puts the bishop to the c5 square.  => 

The game is going on:

                23. Re4        R d8
                24. f4           N e6
                25. B x c5   R x d1
                26. K x d1   R d8 +
                27. K e1       … => 

It’s good for White 24. R x e5 too: 24. R x e5 R he8 25. R x e8 K x e8 26. B x d4 B x d4 27. R e1 + K f7 28. N b5 c3 29. b4 B f2 30. R e2 B x h4 31. N x c3 g6 32. hg K x g6 33. R g2 + K f7 and we get the equal endgame.  => 

Also, It’s good for White to take the e5 pawn at the twenty fifth move: 25. R x e5 B x e3 + 26. R x e3 R x d1 + 27. N x d1 R d8 28. R e4 N d4 29. N f2 b5 30. N g4 R d5 31. a4 a6 32. K b1 N f5 33. ab ab 34. N e5 + K f6 35. R e1 N x h4 36. N g4 + K f7 37. N e5 +. => 

The game may continue:

27. …           bc
28. R x e5   N d4
29. R x c5   N x c2 +
30. K e2       R d4
31. R f5 +     K g8
32. a4           K h7
33. R a5       R x f4
34. R x a7     N d4 +
35. K e3       R x h4
36. N d5       N f5 + =>  59

And we get the position with the equal chances.

There might be 11. … N bd7. According to my analysis, in this variation, Black should play extremely accurately till the very endgame as Black has a one good respond to every White’s move only. There is good news for Black too. In order to make Black to do the forced moves White should follow the strictly unique sequence of the moves. That is the accuracy is required from Black and from White. In this variation, game continues: 11. N c3 N bd7 12. B e3 e5 13. O-O-O ed 14. B x d4 N e5 15. B x e5 Q x e5 16. N h3 R e8 17. R de1 Q g3 18. R x e8 K x e8 19. N e2 Q g2 20. R e1 K d8 21. N ef4 Q h2 22. Q f1 R g8 23. h5 K c8 24. N e6 Q d6 25. N hf4 Q d7 26. Q f2 K b8 27. N d4 B d6 28. N fe6 R e8 29. Q e3 K c8 30. K d1 B c5 31. Q f4 B b6 32. Q f5 B x d4 33. N x d4 R x e1 + 34. K x e1 Q x f5 35. N x f5 N e8 36. K f2 K d7 37. g5 hg 38. N x g7 N f6 39. h6 K e7 40. f4 gf 41. K f3 K f7 42. K x f4 b6 43. K g5 N e4 + 44. K f5 N d6 + 45. K g5 N e4 + 46. K f4 N f6 47. N f5 c5 48. K g5 N h7 + 49. K f4 N f6 50. N d6 + K g6 51. N c8 K x h6 52. N x a7 K g7 53. K f5 d4 54. N c8 N d5 55. K e4 N f6 + 56. K d3 N d5 57. K e4 and we get the equal endgame.  => 

There might be 7. … fe:

7. …            fe
8. B d3        c5
9. B x h7     R x h7
10. dc          N c6
11. Q d3      N f6
12. f4           g6! => 

In this variation, it’s important for Black to drop the g pawn by moving 12. … g6 so that its rock and bishop should become more maneuverable.

Let us demonstrate what happens if Black leaves the g pawn in the g7 square in the two examples. In first example, let us assume Black decides to transfer the king to the g8 square instead of moving g6. Thus, game continues: 12. f4 K f7 13. N f3 K g8 14. h5 N x g4 15. Q g6 N f6 16. N e5 Q e8 17. B e3 Q x g6 18. hg R h8 => 

And White locks up the Black’s king, rock and bishop in the corner of the king side. These Black’s pieces are off from the game. Now White might be not in hurry to implement its plan since its forces greatly exceed the forces of the enemy. Thus, White may to develop its pieces and to push its pawns of the queen side to the promotion point: 19. N d2 h5 20. K e2 R h6 21. N df3 N x e5 22. N x e5 N g4 23. R ag1 N x e3 24. K x e3 R c8 25. K d4 R b8 26. R h4 R c8 27. R g3 R b8 28. R a3 a6 29. R f3 R c8 30. a4 R a8 31. R fh3 R c8 32. R b3 R c7 33. R e3 R c8 34. R c3 a5 35. R b3 R c7 36. R b6 R h8 37. R b5 R h6 38. c3 K h8 39. R x a5 R c8 40. R a7 R b8 41. b4 K g8 42. a5 K h8 43. a6 ba 44. R x a6 K g8 45. R x e6 R d8 46. b5 R a8 47. K x d5 R d8 + 48. K c4 R d1 49. b6 Rb1 50. R c6 K h8 51. R c8 K g8 52. c6 R x b6 53. R x f8+ K x f8 54. c7. White dominates all the game and crushes the enemy.  => 

In other example the Black’s king moves to the d7 square instead of the f7 square in the twelfth move. However, the Black’s rock and bishop are off from the game too: 12. f4 K d7 13. N c3 Q a5 14. B d2 Q x c5 15. B e3 Q c4 16. Q g6 d4 17. O-O-O K c7 18. B x d4 N x d4 19. R x d4 Q f1 + 20. N d1 a5 21. R h3 Q x g1 22. R c3 + and the Black’s king is in the mate net:  => 

The game may continue: 22. R c3 + K b8 23. R d8 + K a7 24. R x a8 + K x a8 25. R c8 + K a7 26. Q d3 Q b6 27. N c3 Q g1 + 28. N d1 Q b6 29. c4 Q d6 30. Q e3 + b6 31. Q f3 N d5 and Black gives the material away to avoid the mate.  => 

If 26. ... Nxg4 then 27. Qd8 Ka6 28. a4 g6 29. Ra8+ Qa7 30. Qd3+ Kb6 31. Qd4+ Kc7 32. Qd8+ Kc6 33. Rc8#.  => 

The main line of the considered variation continues:

13. Q x g6+   Kd7
14. B d2         Rg7
15. Q d3         Nxg4
16. N f3           e5
17. N c3          e6
18. N x e5 +     Ncxe5
19. fe               Qc7
20. R f1             Bxc5
21. O-O-O       Rag8  => 

Now if Black makes a fork by moving 21. … N f2 then 22. R x f2 B x f2 23. B x h6 R g3 24. Q f1 Q c5 25. N e4 B e3 + 26. K b1 Q e7 27. N x g3 B x h6 28. c4 R f8 29. Q d3 K c8 30. cd ed 31. Q x d5 B f4 32. N e4 B x e5 33. N c5 Q h7 + 34. K a1 R e8 35. N e6 B c7 36. N c5 B e5 37. R c1 K b8 38. N d7 + K a8 39. N x e5 and White is clearly winning.  => 

If 23. ... Rgg8 then 24. N x d5 ed 25. Q f5 + K c6 26. Q e6 + K b5 27. R x d5 + K a4 28. B g5 B c5 29. Q g4 + K b5 30. b4 K a6 31. R x c5 Q x c5 32. bc and White wins.  => 

If 24. ... B b6 then 25. Q f7 + K c8 26. Q e8 + Q d8 27. Q x e6 + Q d7 28. Q f6 K c7 29. e6 Q c6 30. B f4 + and White wins again. => 

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