Difference between revisions of "TCEC Season 14 Superfinal Game 11 – Leela-Stockfish"

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'''6... b6 7. c3 Ne7'''(N)
 
'''6... b6 7. c3 Ne7'''(N)
  
Novelty as per Lichess masters database.<ref>https://lichess.org/nEmE8M37#13 (Accessed 2019-11-30)</ref>
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Novelty as per the Lichess masters database.<ref>https://lichess.org/nEmE8M37#13 (Accessed 2019-11-30)</ref>
  
 
'''8. h4'''
 
'''8. h4'''
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'''28... Ra7 29. Bh4 Bd7 30. O-O Qe8 31. Rf2 h5'''
 
'''28... Ra7 29. Bh4 Bd7 30. O-O Qe8 31. Rf2 h5'''
  
Somewhat committal move, but still arguably the best of bad options. For example:
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A somewhat committal move, but still arguably the best of bad options. For example:
* Attempting to challenge: 31... Ng6 32. Nxg6 Rxg6 33. Rdf1 Be7 34. Bg2 Bc8 35. Bf6 Rc7 36. Qh5 Rg8 37. Qxe8 Rxe8 38. Bxe7 Rexe7 Here white could now even offer a piece sacrifice for connected passed pawns. 39. Bxd5. Black's best option would probably be not to accept the sacrifice with 39... h5 40. Bg2 hxg4 41. Rf8 but black would probably still not hold against the pressure.
+
* Attempting to challenge: 31... Ng6 32. Nxg6 Rxg6 33. Rdf1 Be7 34. Bg2 Bc8 35. Bf6 Rc7 36. Qh5 Rg8 37. Qxe8 Rxe8 38. Bxe7 Rexe7. Here white could now even offer a piece sacrifice for connected passed pawns and play 39. Bxd5. Black's best option would probably be not to accept the sacrifice with 39... h5 40. Bg2 hxg4 41. Rf8 but black would probably still not hold against the pressure.
* Staying passive: 31... Bc8 32. Bf6 Ka6 33. Qh5 Qxh5 34. Nxh5 Ng6 35. Kh2 Bb7 36. Bg2 Bc6 37. Rdf1. White still has multiple options for improving the position, whereas while can only react.
+
* Staying passive: 31... Bc8 32. Bf6 Ka6 33. Qh5 Qxh5 34. Nxh5 Ng6 35. Kh2 Bb7 36. Bg2 Bc6 37. Rdf1. White still has multiple options for improving the position, whereas black can only react.
  
 
'''32. g5 Ng6 33. Nxg6 Qxg6 34. Bg2 Qe8 35. Rf6''' ''(diagram)''
 
'''32. g5 Ng6 33. Nxg6 Qxg6 34. Bg2 Qe8 35. Rf6''' ''(diagram)''
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'''52... Rb8 53. Kg3 Be6 54. Kh4 Kb7 55. g7 Qd7 56. Rg5 Rc8 57. Rg1 Bf7 58. Qf3 Qe8 59. Rf1 Rc7 60. Qd3 Bg8 61. Kg5 b4 62. axb4 Rc4 63. Kh6 Qe6 64. Qf5'''
 
'''52... Rb8 53. Kg3 Be6 54. Kh4 Kb7 55. g7 Qd7 56. Rg5 Rc8 57. Rg1 Bf7 58. Qf3 Qe8 59. Rf1 Rc7 60. Qd3 Bg8 61. Kg5 b4 62. axb4 Rc4 63. Kh6 Qe6 64. Qf5'''
  
White threatens a queen-trade to win the h-pawn. Trading the queens would end the game quickly. 64... Qxf5 65. Rxf5 a3 66. bxa3 Rxc3 67. Bh4 Rc6+ 68. Kxh5 Kc7 69. Rf8 Be6. White could queen on the next move to win the bishop, but the fastest win would be Rf6 (mate in 16.)
+
White threatens a queen-trade to win the h-pawn. Trading the queens would end the game quickly. For example: 64... Qxf5 65. Rxf5 a3 66. bxa3 Rxc3 67. Bh4 Rc6+ 68. Kxh5 Kc7 69. Rf8 Be6. White could queen the pawn on the next move to win the bishop. However, the fastest win would actually be Rf6 (mate in 16.)
  
Black avoid the queen-trade.
+
So, black avoids the queen-trade.
  
 
'''64... Qe8 65. Rf3 Rc6 66. Qxh5 Bf7 67. Qf5 Be6 68. Qg6 Bf7 69. Qd3 Re6 70. Kg5 Qc6 71. Rg3 Re8 72. Rh3 Rg8 73. Rh4 Qd7 74. Kf4 Be6 75. Rh7 Kb6 76. Rh6 Kb7 1-0.''' ''(diagram)''
 
'''64... Qe8 65. Rf3 Rc6 66. Qxh5 Bf7 67. Qf5 Be6 68. Qg6 Bf7 69. Qd3 Re6 70. Kg5 Qc6 71. Rg3 Re8 72. Rh3 Rg8 73. Rh4 Qd7 74. Kf4 Be6 75. Rh7 Kb6 76. Rh6 Kb7 1-0.''' ''(diagram)''

Latest revision as of 12:09, 4 December 2019

Game Season 14, Superfinal, Game 11
Result 1-0
ECO C04
Links TCEC archive
Lichess




Game overview

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  
    
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    
♜ ♝♛♚♝ ♜
    ♞♟♟ 
    ♟  ♟
 ♟ ♟♙  ♙
♟ ♟♙ ♙♕♘
♙♞♙ ♗   
 ♙  ♗ ♙ 
♖   ♔♘ ♖
Position after 17... Nb3


1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3

Book exit into French defense, Tarrasch variation, Guimard defense. Black typically has ideas such as a5 and Be7. In the game a marginal move was played.

6... b6 7. c3 Ne7(N)

Novelty as per the Lichess masters database.[1]

8. h4

White begins the AlphaZero-style border pawn push, which both attacks and restricts black's development on the kingside. Along with early g4, such ideas are often seen in the French defense.

8... c5 9. h5 h6 10. Nh4 c4

Black closed the queenside early. However, it is not clear whether black would be better off with other options, such as 10... a5 11. a4 Nc6.

11. Nd2 b5 12. Qg4 a5 13. Be2 a4 14. a3

Now the queenside is completely blocked.

14... Nb8 15. f4 Nbc6 16. Nf1 Na5 17. Be3 Nb3 (diagram)

Black installed a knight on the outpost, but the outpost is far from the action.


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     
      
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  
    
   
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      
    ♛♝♜ 
♜  ♝    
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♚♟ ♟♙ ♙♟
♟ ♟♙   ♗
♙♞♙ ♘  ♕
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   ♖  ♔ 
Position after 35. Rf6


18. Rd1 Kd7 19. Bf2 Kc7 20. Ne3 Kb7 21. Qh3 g5

If black would stay passive, white would slowly improve the position in order to break through. For example: 21... Bd7 22. g4 Nc6 23. Bf3 Be7 24. O-O and white would now slowly start to theaten f5 and then f6. (These lines are not forced.)

22. hxg6 fxg6 23. g4 Ka6 24. Nhg2 Rg8 25. Bf3 Ka5 26. Bh4 g5 27. Bg3 gxf4 28. Nxf4

Now the f-file is open. White is faster in taking advantage of it.

28... Ra7 29. Bh4 Bd7 30. O-O Qe8 31. Rf2 h5

A somewhat committal move, but still arguably the best of bad options. For example:

  • Attempting to challenge: 31... Ng6 32. Nxg6 Rxg6 33. Rdf1 Be7 34. Bg2 Bc8 35. Bf6 Rc7 36. Qh5 Rg8 37. Qxe8 Rxe8 38. Bxe7 Rexe7. Here white could now even offer a piece sacrifice for connected passed pawns and play 39. Bxd5. Black's best option would probably be not to accept the sacrifice with 39... h5 40. Bg2 hxg4 41. Rf8 but black would probably still not hold against the pressure.
  • Staying passive: 31... Bc8 32. Bf6 Ka6 33. Qh5 Qxh5 34. Nxh5 Ng6 35. Kh2 Bb7 36. Bg2 Bc6 37. Rdf1. White still has multiple options for improving the position, whereas black can only react.

32. g5 Ng6 33. Nxg6 Qxg6 34. Bg2 Qe8 35. Rf6 (diagram)

White managed to get a rook on an outpost square. If the rook is captured, white has the option to capture back with the e-pawn for connected passed pawns.


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      
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    
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    ♛ ♝ 
♚♜      
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 ♟ ♟♙  ♟
♟  ♙    
♙ ♙♕    
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Position after 52. Qxd3


35... Bc8 36. Qg3 Rc7 37. Bh3 Bg7 38. Kh2 Rf7

Taking the exchange would be ill-advised, as white would get two strong connected passed pawns: 38... Bxf6 39. exf6.

39. Ng2 Ka6 40. Qe3 Ka7 41. Nf4 Re7 42. Rg1 Kb8 43. g6 Rh8 44. Rg2 Ka7 45. Qf2 Rb7

Black simply gave up the e-pawn to delay the inevitable. Trying to hold the position was hopeless. For example:

45... Rh6 46. Rf7

  • 46... Rb7 47. Bf6 would liberate the g-pawn.
  • 46... Rxf7 47. gxf7 Qxf7 48. Nxd5 Qxf2 49. Bxf2 exd5 50. Rxg7+. There is no stopping the e-pawn without losing material:
    • 50... Kb8 51. Rg8 Rc6 52. e6 Rc7 53. Bg3 pinning the rook.
    • 50... Bb7 51. e6 Kb6 52. e7 Bc6 53. Rg8 Rh7 54. e8=Q Bxe8 55. Rxe8

46. Bxe6 Bxf6 47. Bxf6 Bxe6 48. Bxh8 Bg8 49. Bf6 Nc1 50. Qe3 Nd3 51. Nxd3 cxd3 52. Qxd3 (diagram)

After the exchanges, white is now two pawns up with two advanced passers.


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       
     
     
      
    
      
       
        
      ♜ 
 ♚ ♛  ♙ 
    ♝♗ ♖
   ♟♙   
♟♙ ♙ ♔  
  ♙♕    
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Position after 76... Kb7


52... Rb8 53. Kg3 Be6 54. Kh4 Kb7 55. g7 Qd7 56. Rg5 Rc8 57. Rg1 Bf7 58. Qf3 Qe8 59. Rf1 Rc7 60. Qd3 Bg8 61. Kg5 b4 62. axb4 Rc4 63. Kh6 Qe6 64. Qf5

White threatens a queen-trade to win the h-pawn. Trading the queens would end the game quickly. For example: 64... Qxf5 65. Rxf5 a3 66. bxa3 Rxc3 67. Bh4 Rc6+ 68. Kxh5 Kc7 69. Rf8 Be6. White could queen the pawn on the next move to win the bishop. However, the fastest win would actually be Rf6 (mate in 16.)

So, black avoids the queen-trade.

64... Qe8 65. Rf3 Rc6 66. Qxh5 Bf7 67. Qf5 Be6 68. Qg6 Bf7 69. Qd3 Re6 70. Kg5 Qc6 71. Rg3 Re8 72. Rh3 Rg8 73. Rh4 Qd7 74. Kf4 Be6 75. Rh7 Kb6 76. Rh6 Kb7 1-0. (diagram)

The game was adjudicated as white win by the TCEC win rule.

Example continuation: 76... Kb7 77. Rh8 Kb6 78. Kg5 Qc8 79. Qc2 Qe8 80. Qg6 Qc8 81. Be7 Kc6 82. Bf8 Kb5 83. Rh6 Bd7 84. Qf7 and black will lose the rook.

Analysis

Analysis by ChessNetwork


Kingscrusher's analysis of the game


Analysis by Adagmator


References

  1. https://lichess.org/nEmE8M37#13 (Accessed 2019-11-30)