Fat Fritz: Dynamik, Genauigkeit und tiefes Positionsverständnis

von Elshan Moradiabadi
11.11.2019 – Was kann Fat Fritz, das andere Engines nicht können? GM Elshan Moradiabi hat sich die Wettkämpfe, die Fat Fritz gegen Stockfish 8 und gegen Stockfish 10 gespielt hat, genauer angeschaut und war vor allem durch die Genauigkeit von Fat Fritz und das tiefe Positionsverständnis des Programms beeindruckt.

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Fat Fritz gegen Stockfish - Teil 2

Rückblick : Um zu sehen, wie gut Fat Fritz spielt, wurden zwei Wettkämpfe zwischen Fat Fritz und Stockfish arrangiert. 

Beide Programme, Fat Fritz und Stockfish, liefen dabei auf dem gleichen Computer, einem Ryzen 7 3700X mit einem NVIDIA RTX 2080, 32 GB RAM. Gespielt wurde mit einer Bedenkzeit von 20m+10s, Ponder war ausgeschaltet und die Programme hatten Zugriff auf die Silver Openings Suite, um möglichst große Variabilität in der Eröffnung zu gewährleisten.

Stockfish lief auf 16 Threads mit 16 Millionen Nodes pro Sekunde (NPS) während die Pre-Release Version von Fat Fritz mit etwas mehr als 11 Tausend NPS lief (für die Leela-Spezialisten: dies geschah mit dem langsameren CUDNN Backend). In Bezug auf NPS liegt Fat Fritz deutlich hinter seinen Konkurrenten: AlphaZero hat hat hier einen Vorteil von 900 zu 1 NPS gegenüber Fat Fritz, und Stockfish war in Sachen NPS sogar 1450 Mal schneller als Fat Fritz. 

Fat Fritz durfte einmal gegen Stockfish 8 und einmal gegen Stockfish 10 antreten. Beide Wettkämpfe gingen über 100 Partien. Hier sind die Ergebnisse:

Erkenntnisse aus und Höhepunkte des Wettkampfs

Von GM Elshan Moradiabadi

Fat Fritz hat einen Hang zu dynamischem Schach, aber die neuronalen Netze, die ihn so stark machen, sorgen bei dem Programm auch für tiefes positionelles Verständnis. Die folgende Partie ist ein gutes Beispiel.

[Event "Rapid match 20m+10s"] [Site ""] [Date "2019.10.23"] [Round "5"] [White "Fat Fritz"] [Black "Stockfish 10 64 POPCNT"] [Result "1-0"] [ECO "A28"] [Annotator "Elshan"] [PlyCount "139"] [EventDate "2019.??.??"] [TimeControl "1200+10"] 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 {0.17/13 25 The provided theory was already over a move ago, but FF amazes me by once again choosing the most fashionable line these days.} Bb4 {-0.30/33 62} 5. d3 {0.17/12 15} d6 {-0.20/ 30 18} 6. Be2 {0.16/12 35 This is also Magnus Carlsen's choice, though the general belief is that White should not let Black play a5.} a5 {-0.31/31 28 (0-0)} 7. O-O {0.15/12 56 (Le3)} O-O {-0.18/32 51} 8. h3 {0.13/12 11 (a3)} Bc5 {-0.44/32 53} 9. Be3 {0.11/14 40} Re8 {-0.39/29 19 (Sd4)} 10. Qd2 {0.13/11 31 (Sd5)} Bd7 {-0.43/31 13} 11. Bd1 {0.11/12 38 (Sd5)} h6 {-0.12/33 86} 12. Kh1 { 0.14/15 50 (Tc1)} Nh7 {-0.09/25 25 (Sd4)} 13. Nh2 {0.20/12 23} Rf8 {-0.11/30 64 } 14. Bg4 {0.21/13 41 (Tc1)} Nf6 {-0.15/28 14} 15. Bd1 {0.19/13 53 (Lxd7)} b6 { -0.15/33 151 (Lxe3)} 16. f4 {0.35/12 21 (Tc1)} Bxe3 {0.00/33 66} 17. Qxe3 { 0.33/14 16} Rb8 {0.00/34 34} 18. b3 {0.28/14 61 (fxe5)} Qe7 {-0.14/30 9} 19. f5 {0.27/13 7 (fxe5)} Nd4 {-0.37/30 15} 20. a4 {0.28/14 35 (Sd5)} c6 {-0.38/30 31 (Kh7)} 21. Nf3 {0.36/13 33} c5 {-0.27/32 17 (Sxf3)} 22. Ra2 {0.56/13 42 (Sh2)} Bc6 {0.00/39 56} 23. g4 {0.53/14 19} Nh7 {0.09/39 117} 24. Rh2 {0.50/13 26} Nxf3 {0.09/42 18 (g5)} 25. Bxf3 {0.60/16 52} Qh4 {0.09/44 14 (g5)} 26. Nd1 { 0.79/12 58 (Tg1)} Rbc8 {0.73/32 188 (Dg5)} 27. Be2 {0.94/11 29 (De2)} Rc7 { 0.97/32 60} 28. Rg1 {1.00/11 26 (Dg1)} g6 {0.88/28 11} 29. Qd2 {1.01/11 30} Kh8 {0.91/30 24 (Kg7)} 30. Ne3 {1.04/12 33} Qf6 {1.22/34 66 (Te8)} 31. h4 {1.13/16 32} g5 {1.12/39 43} 32. Nf1 {1.19/15 21} Qd8 {1.12/40 14 (gxh4)} 33. hxg5 { 1.25/14 39} Nxg5 {1.12/42 20 (hxg5)} 34. Rxh6+ {1.33/25 41} Kg7 {1.12/45 14 [#] This is a typical example of the advantage of AI (neural networks) over other brute force chess engines: intuition. I honestly don't know how they train themselves on it, but its resemblance to human intuition is astonishing. Here I had my computer run on this position and it only showed White's pseudo exchange-sac on depth 35. Needless to say, my engine couldn't detect the idea 3 or 4 moves in advance.} 35. Rxd6 $1 {1.41/28 22 Black is busted, the position is closed and white's extra space is the crucial factor here. It is the closest you can find human's intuition to AI.} Rh8+ {1.09/33 23} 36. Kg2 { 1.42/25 11} Qxd6 {1.75/34 22} 37. Qxg5+ {1.50/25 23} Kf8 {1.67/34 7} 38. f6 { 1.54/24 14} Ke8 {1.48/36 17} 39. Qg7 {1.55/22 0 (Th1)} Qf8 {1.72/36 12} 40. Qxf8+ {1.59/20 25 (Dg5)} Kxf8 {0.78/31 9} 41. Ne3 {1.60/21 0 (g5)} Rc8 { 2.21/41 73 (Ld7)} 42. g5 {1.58/17 88} Rg8 {2.23/36 39} 43. Kf3 {1.66/20 46 (Kf2)} Bd7 {2.24/31 7} 44. Nf5 {1.72/20 19} Rc6 {2.12/35 10} 45. Rg3 {1.79/20 42 (Kf2)} Bxf5 {2.12/33 4 (Th8)} 46. exf5 {2.46/18 62} Rd6 {2.87/37 13} 47. Ke4 {2.48/19 13} Rxf6 {2.96/39 15} 48. Kxe5 {2.50/17 17} Rc6 {2.92/40 7 (Th6)} 49. g6 {2.47/19 45} Ke7 {3.76/41 26 (Tc7)} 50. Bf3 {2.73/18 44} Rf6 {6.82/31 14} 51. Rh3 {2.74/19 10 (g7)} Rg7 {2.95/36 2} 52. gxf7 {2.76/17 17} Rgxf7 {2.97/40 6} 53. Rh5 {2.80/17 9} Rd6 {3.73/39 21 (Tf8)} 54. Bd5 {2.99/17 40} Rff6 { 4.21/32 11} 55. Rh7+ {3.02/16 12} Kd8 {4.58/32 10} 56. Rb7 {3.11/15 18 (d4)} Rh6 {2.83/36 3} 57. Be6 {3.12/15 13} Rxd3 {2.82/37 5} 58. Rxb6 {3.05/19 11} Kc7 {2.87/43 20} 59. Rb5 {2.90/17 30} Re3+ {3.07/41 9 (Kc6)} 60. Kd5 {3.38/12 40} Rexe6 {4.26/41 14 (Td3+)} 61. fxe6 {3.55/16 29} Rh5+ {5.37/40 10} 62. Ke4 { 3.42/16 0} Kd6 {5.86/39 10} 63. Rb6+ {3.68/14 16} Ke7 {6.35/35 11} 64. Ra6 { 3.71/13 9} Kf6 {6.37/36 10 (Tg5)} 65. Kd3 {3.97/12 20} Rg5 {7.38/32 10 (Ke7)} 66. Kc2 {3.91/11 35 (Kd2)} Rg2+ {5.28/26 3 (Th5)} 67. Kb1 {3.83/11 34} Rg5 { 8.77/35 17} 68. Kb2 {3.76/11 8 (Ka2)} Ke7 {9.39/32 10 (Tf5)} 69. Ka3 {3.83/11 11} Rh5 {10.49/35 10} 70. Rxa5 {3.43/11 10} 1-0

Die folgende Partie endet mit Remis, aber ist dennoch atemberaubend. Sie erinnert mich an die berühmte Begegnung zwischen Kotov und Gligoric aus dem Kandidatenturnier in Zürich 1953. Fat Fritz bringt nicht nur eins, sondern zwei positionelle Qualitätsopfer, doch Stockfish muss das Material zurückgeben, um seine gedrückte Stellung zu befreien und Ausgleich zu bekommen. Diese Partie zeigt, dass Fat Fritz eine kreative Engine mit tiefem Schachverständnis ist, auf deren Urteil man vertrauen kann.

[Event "Rapid match 20m+10s"] [Site ""] [Date "2019.10.24"] [Round "12"] [White "Stockfish 10 64 POPCNT"] [Black "Fat Fritz"] [Result "1/2-1/2"] [ECO "A67"] [Annotator "Elshan"] [PlyCount "409"] [EventDate "2019.??.??"] [TimeControl "1200+10"] 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 {Last book move.} 7. f4 {1.09/32 175} Bg7 {0.80/18 17} 8. Bb5+ {0.95/29 19} Nfd7 {0.81/20 18} 9. Bd3 {1.01/29 17 (a4)} Qh4+ {0.66/15 47 (0-0)} 10. g3 {0.98/29 17} Qd8 {0.66/18 13} 11. Nf3 {0.99/28 14} Na6 {0.66/17 60 (0-0)} 12. Nb5 {0.86/29 97 (0-0)} Nb6 {0.72/19 29} 13. f5 {0.80/29 15} O-O {0.83/21 69 (c4)} 14. O-O {1.00/28 13} c4 {0.84/20 0} 15. Bb1 {1.12/30 29 (Lc2)} Nd7 {0.24/17 40} 16. Kh1 {0.81/30 37 (Le3)} Qb6 {0.13/19 35} 17. a4 {0.98/30 24} Nac5 {0.11/19 17} 18. Bc2 {0.70/33 123 (Lf4)} a6 {0.06/20 42} 19. Nc3 {0.80/28 11} Qc7 {0.05/24 21 (Db4)} 20. g4 { 0.57/31 99 (Lf4)} Rb8 {-0.13/18 47} 21. a5 {0.12/31 72 [#] Unlike Leela, Fat Fritz has a sweet tooth for complexity, and while Leela deals with positional sacrifices as they happen (as a matter of necessity or not), Fat Fritz actively seeks complex lines, making it a great companion for those who take a liking to the games of Kasparov and Tal!} b6 {-0.16/20 28 weakening c6,} 22. Nd4 {0.43/25 17 (De1)} b5 {-0.26/22 54 Couldn't you do it earlier?!} 23. Nc6 { 0.69/27 16 [#]} b4 $3 {-0.25/31 31 The two exclamation points is for the aesthetic essence of the idea and not its soundness, though the idea is one of the three sound ones in this position.} 24. Nxb8 {0.00/35 79 (Sa4)} Qxb8 { -0.37/22 39} 25. Na4 {0.00/36 17} b3 {-0.38/23 20} 26. Bb1 {0.00/35 14} Nxa4 { -0.35/24 23} 27. Rxa4 {0.00/35 18} Qb5 {-0.35/26 0} 28. Ra3 {0.00/37 19 (Ta1)} Be5 {-0.47/17 63 White's attack and position is completely blocked.} 29. Qe2 { 0.15/28 23} Nc5 $5 {-0.47/18 0 Direct and aggressive.} 30. Bh6 {0.00/32 92 (Tf2)} Bd7 $5 {-0.29/32 86 [#] The second exchange sacrifice! I heard Fat Fritz had gone through all of the games on Mega Database, I am sure it took a close look at Kotov-Gligoric Zurich 1953.} 31. Bxf8 {0.00/36 15 (Tc1)} Kxf8 { -0.31/27 63} 32. Rc1 {0.00/39 17} Qb7 {-0.26/32 25} 33. Rxc4 $1 {0.00/40 22 Stockfish realizes the dire situation and gives back material for activity.} Bb5 {-0.23/31 18} 34. Bd3 {0.00/42 17} Bxc4 {-0.23/27 0} 35. Bxc4 {0.00/43 39} Qb4 {-0.23/26 0} 36. Ra1 {0.00/45 14} g5 $1 {-0.23/25 44 JIT: Just-in-time!} 37. Kg2 {0.00/36 41 (h4)} h6 {-0.46/22 120 [#] (Sa4) The position is dynamically balanced and the two giant engines concede to this fact after a hard-fought battle.} 38. h3 {0.00/38 52 (Tf1)} Kg8 {-0.90/19 61 (Ke7)} 39. Rf1 {0.00/37 16 (f6)} Bxb2 {-0.84/21 37 (Dxa5)} 40. Rb1 {0.00/40 13} Be5 {-0.81/19 23 (Ld4)} 41. Bxb3 {0.00/45 17} Qxa5 {-0.78/19 27 (Dc3)} 42. Qe3 {0.00/43 12} Qa3 {-0.76/21 108} 43. Qf3 {0.00/45 13} Qb4 {-0.77/17 0} 44. Bc2 {0.00/41 22} Qc4 {-0.76/23 10 (Dd2+)} 45. Rb8+ {0.00/45 15 (Lb3)} Kg7 {-0.89/17 45} 46. Bb1 {0.00/45 12} Nd7 {-0.85/18 62 (Kf6)} 47. Rb7 {0.00/42 16} Qc8 {-0.85/16 0 (Sc5) } 48. Rb3 {0.00/40 12} a5 {-0.84/17 21 (Sc5)} 49. Qe3 {0.00/41 14 (Dd1)} Nc5 { -0.90/16 73 (Kf6)} 50. Rb5 {0.00/39 15} Qa6 {-0.82/20 30} 51. Qe2 {0.00/44 12 (Txc5)} a4 {-0.77/15 26} 52. Qc4 {0.00/45 18} Qa7 {-0.75/21 7} 53. Ba2 { 0.00/41 11 (Db4)} Nd7 {-1.27/12 22} 54. Qd3 {0.00/42 29} Nf6 {-1.26/13 22} 55. Rb4 {0.00/45 11} Nd7 {-1.24/13 8} 56. Bc4 {0.00/42 12 (Tb5)} a3 {-1.38/13 23} 57. Ba2 {0.00/46 13} Qa5 {-1.35/13 31 (Dc5)} 58. Qb5 {0.00/45 15} Qa7 {-1.34/ 13 3 (Dc7)} 59. Qd3 {0.00/45 13 (De2)} Bb2 {-1.33/12 26 (Dc5)} 60. Qd2 { 0.00/41 11} Qa6 {-1.29/13 29} 61. Bb1 {0.00/40 11 (Lc4)} Be5 {-1.29/10 9 (Sc5)} 62. Qc2 {0.00/42 12 (La2)} Qa7 {-1.41/12 11} 63. Ba2 {0.00/46 25 (Db3)} Qa5 { -1.34/12 22 (De3)} 64. Qd2 {0.00/44 8 (Dc4)} Ba1 {-1.30/10 12 (Sc5)} 65. Rb2 { 0.00/42 12} Qc5 {-1.24/12 13 (Da6)} 66. Rb3 {0.00/42 13 (Tc2)} Be5 {-1.12/13 14 (Lb2)} 67. Bb1 {0.00/41 21} Bb2 {-0.81/17 10 (Sf6)} 68. h4 {0.00/40 15 (Tb7) } Bf6 {-0.99/19 6 (Kf6)} 69. hxg5 {0.00/42 12} hxg5 {-0.91/21 6} 70. Rb7 { 0.00/40 12 (De3)} Ne5 {-1.06/15 13} 71. Rb3 {0.00/43 11} Nd7 {-0.99/21 5 (Sxg4) } 72. Ba2 {0.00/46 17 (De3)} Ne5 {-1.11/14 13 (Dc4)} 73. Qc3 {0.00/37 8} Nc4 { -1.05/15 6} 74. Qd3 {0.00/38 10} Be5 {-0.74/18 31 (Lb2)} 75. Bb1 {0.00/41 10} Bf6 {-0.65/21 1} 76. Ba2 {0.00/41 11} Bd4 {-0.57/19 11 (Se5)} 77. Bb1 {0.00/42 10} Ne5 {-0.54/22 8 (Lf6)} 78. Qd2 {0.00/42 9} Kf6 {-0.53/21 5} 79. Qb4 { 0.00/44 11} Qxb4 {-0.52/20 4} 80. Rxb4 {0.00/47 15} Bc5 {-0.52/17 7} 81. Rb8 { 0.00/46 12 (Ta4)} Nxg4 {-0.57/12 16} 82. Re8 {0.00/44 10} Ne5 {-0.53/12 22} 83. Ba2 {0.00/47 21 (Kg3)} Nd7 {-0.52/11 19 (Le3)} 84. Kg3 {0.00/47 23} Ne5 { -0.49/11 10} 85. Bb1 {0.00/44 24 (Ta8)} Bb4 {-0.49/10 10 (Sc4)} 86. Ba2 { 0.00/42 6 (Ta8)} Be1+ {-0.51/10 7} 87. Kg2 {0.00/48 8} Bd2 {-0.50/11 14 (Lb4)} 88. Rd8 {0.00/48 8 (Ta8)} Bb4 {-0.50/11 5} 89. Ra8 {0.00/49 11 (Tb8)} Nd3 { -0.47/10 15 (Lc5)} 90. Bb1 {0.00/45 15 (Kg3)} Ne5 {-0.47/11 10} 91. Ba2 { 0.00/48 9 (Kg3)} Bc5 {-0.45/10 8} 92. Kg3 {0.00/48 53} Kg7 {-0.42/10 10 (Lb4)} 93. Bb3 {0.00/47 5 (Lb1)} Kh6 {-0.42/10 12 (Kf6)} 94. Bd1 {0.00/44 7 (Tg8)} Kh7 {-0.45/9 9 (Sd7)} 95. Bh5 {0.00/46 7 (Lc2)} Kg7 {-0.42/11 9} 96. Be2 {0.00/50 10} Kh7 {-0.39/11 11 (Sd7)} 97. Kh3 {0.00/50 9 (Ld1)} Kh6 {-0.41/10 8 (Kg7)} 98. Kg3 {0.00/51 8} Kg7 {-0.38/11 11} 99. Ra6 {0.00/52 12 (Lb5)} Kf6 {-0.41/10 12} 100. Kh3 {0.00/48 11 (Ta4)} Ke7 {-0.43/11 9} 101. Kg2 {0.00/52 9 (Lb5)} Bb4 {-0.47/11 12 (Kf6)} 102. Ra8 {0.00/50 18 (Lb5)} Bc5 {-0.42/12 10 (Kf6)} 103. Kg3 {0.00/49 7} Bb4 {-0.33/13 9 (Kf6)} 104. Bh5 {0.00/42 8 (Ta4)} Nd7 {-0.41/ 12 10 (Kf6)} 105. Ra4 {0.00/45 10} Bc5 {-0.38/14 3} 106. Be2 {0.00/54 28} Nb6 { -0.35/13 9 (Se5)} 107. Ra6 {0.00/51 6} Nd7 {-0.33/13 6} 108. Kg4 {0.00/51 11 (Ta4)} f6 {-0.39/14 11 (Kf6)} 109. Bb5 {0.31/48 7} Ne5+ {-0.34/15 6} 110. Kg3 { 0.31/52 7 (Kh5)} Kd8 {-0.40/11 11} 111. Bf1 {0.31/50 8 (Ta4)} Kc7 {-0.37/11 24} 112. Be2 {0.31/51 7 (Ta4)} Kb7 {-0.37/10 10 (Kd8)} 113. Kh2 {0.31/43 7 (Ta4)} Kc8 {-0.42/10 9 (Kc7)} 114. Kg3 {0.30/53 47} Kc7 {-0.37/9 11 (Kd8)} 115. Bf1 { 0.30/50 10 (Ta4)} Nd7 {-0.36/10 10 (Kd7)} 116. Bc4 {0.29/46 6 (Lb5)} Kb7 { -0.37/10 10 (Se5)} 117. Bb5 {0.29/51 8} Ne5 {-0.37/10 4} 118. Bf1 {0.28/48 16 (Le2)} Kb8 {-0.36/10 16 (Kc7)} 119. Ra5 {0.21/51 6 (Lb5)} Kc8 {-0.37/9 9 (Kb7)} 120. Be2 {0.20/53 6 (Ta4)} Nd7 {-0.37/9 11 (Kc7)} 121. Bb5 {0.20/48 13 (Ta4)} Ne5 {-0.34/10 4} 122. Bf1 {0.20/54 8 (Le2)} Nd7 {-0.38/9 16 (Kc7)} 123. Ra8+ { 0.11/45 9 (Lb5)} Kc7 {-0.37/11 8 (Kb7)} 124. Bb5 {0.01/49 24 (Ta4)} Ne5 { -0.36/11 5} 125. Bf1 {0.01/53 7 (Le2)} Kb6 {-0.31/10 16 (Lb4)} 126. Ra6+ { 0.00/52 9 (Ta4)} Kb7 {-0.29/10 7 (Kc7)} 127. Be2 {0.00/46 31 (Ta4)} Kc8 { -0.30/10 13 (Kc7)} 128. Bd1 {0.00/50 5 (Ta4)} Nd7 {-0.37/11 12 (Kc7)} 129. Bb3 {0.00/50 11 (Le2)} Ne5 {-0.41/10 10 (Kb7)} 130. Ra8+ {0.00/43 5 (Ld1)} Kc7 { -0.39/13 5} 131. Ba2 {0.00/47 9 (Tf8)} Nd7 {-0.36/10 9 (Sd3)} 132. Rh8 { 0.00/41 10 (Te8)} Be3 {-0.33/10 16 (Ld4)} 133. Kf3 {0.00/43 6 (Ta8)} Bc1 { -0.40/10 7} 134. Ra8 {0.00/44 7 (Th7)} Nc5 {-0.45/12 7 (Kb7)} 135. Bc4 { 0.00/42 13} Kb7 {-0.44/14 6 (Lb2)} 136. Ra5 {0.00/42 5} Nd7 {-0.43/13 5} 137. Rb5+ {0.00/41 10} Ka7 {-0.42/12 16 (Kc7)} 138. Ke2 {0.00/42 6 (Ta5+)} Ne5 { -0.48/12 14 (Lb2)} 139. Ba2 {0.00/44 7} Bb2 {-0.43/13 12 (Sd7)} 140. Kd2 { 0.00/42 8 (Ke3)} Nd7 {-0.52/11 9} 141. Ke3 {0.00/44 8 (Ke2)} Bc3 {-0.50/11 13 (Lc1+)} 142. Rb3 {0.00/45 6 (Lb1)} Bb2 {-0.61/12 5} 143. Rb5 {0.00/50 12 (Tb4)} Ne5 {-0.39/11 15 (Lc1+)} 144. Rb4 {0.00/44 7 (Ke2)} Nf7 {-0.36/11 11 (Sd7)} 145. Bc4 {0.00/42 14 (Tb5)} Ka8 {-0.30/12 10 (Se5)} 146. Kd3 {0.00/43 13 (Le2)} Ne5+ {-0.16/14 9} 147. Kc2 {0.00/46 8} g4 {-0.11/15 6} 148. Kb1 {0.00/44 20 (Lf1)} g3 {-0.23/18 7} 149. Bf1 {0.00/46 8} Nf3 {-0.15/20 5} 150. Bh3 {0.00/43 14} Ka7 {-0.10/21 11} 151. Ka2 {0.00/46 6} Ng1 {-0.07/21 20} 152. Bf1 {0.00/45 13} Nf3 {-0.08/22 0} 153. Bh3 {0.00/46 15} Ne1 {-0.05/19 6 (Sg1)} 154. Rb3 { 0.80/35 5} Be5 {-0.03/21 3 (g2)} 155. Rxa3+ {0.84/36 6} Kb6 {0.03/20 7} 156. Re3 {0.84/43 7} Nc2 {0.06/19 5} 157. Rb3+ {0.83/45 13} Kc5 {0.08/18 6} 158. Kb1 {0.83/49 9} Nd4 {0.09/17 6} 159. Rc3+ {0.82/48 12 (Td3)} Kb4 {0.06/14 24} 160. Rd3 {0.82/49 6} Kc4 {0.10/14 13 (Sb5)} 161. Re3 {1.09/46 5} Nb5 {0.16/15 29 (Kc5)} 162. Kc2 {1.07/45 7} Nd4+ {0.15/13 0} 163. Kd1 {1.00/50 9} Kb5 {0.16/13 15 (Lf4)} 164. Ra3 {1.00/45 6 (Lf1+)} Kb4 {0.19/12 9} 165. Ra2 {1.00/47 7 (Ta8) } Kc3 {0.16/10 15} 166. Bf1 {1.00/51 8} Nb3 {0.19/11 6} 167. Ra8 {1.00/52 12 (Ta3)} Nc5 {0.17/10 11 (Kd4)} 168. Bg2 {1.00/49 7 (Ke2)} Nb3 {0.15/10 9} 169. Bf1 {1.00/55 8 (Ta3)} Nc5 {0.16/10 11 (Kd4)} 170. Bg2 {1.00/52 8 (Ke2)} Nb3 { 0.13/9 9} 171. Ra4 {1.00/54 7 (Ta3)} Kd3 {0.14/10 16} 172. Ke1 {1.00/52 12 (Ta3)} Nd4 {0.05/10 7 (Lc3+)} 173. Ra3+ {1.00/45 7} Kc2 {0.07/11 8} 174. Bf1 { 1.00/50 7} Bf4 {0.14/11 11 (Sb3)} 175. Ra2+ {1.00/47 9} Kc3 {0.18/11 13 (Kc1)} 176. Kd1 {1.00/47 8 (Ta8)} Be5 {0.16/10 8} 177. Ra4 {1.00/55 9 (Ta8)} Nb3 { 0.15/10 12} 178. Rc4+ {1.00/56 12} Kb2 {0.19/10 0} 179. Rc2+ {1.00/60 21 (Tc8)} Ka3 {0.22/10 13} 180. Rc6 {1.00/50 15 (Tc8)} Nc5 {0.16/9 16 (Kb2)} 181. Kc2 { 1.27/43 4 (Tb6)} Kb4 {0.19/10 15 (Sxe4)} 182. Rc8 {1.58/43 6} Ka5 {0.20/9 10} 183. Bg2 {1.58/46 8 (Tb8)} Kb4 {0.17/8 10} 184. Bf1 {1.58/44 7 (Kd2)} Ka5 { 0.18/9 10} 185. Ra8+ {1.29/45 58 (Tb8)} Kb6 {0.18/9 10} 186. Bd3 {1.14/45 13 (Tb8+)} Kb7 {0.12/9 8} 187. Rg8 {1.14/45 8} Kb6 {0.15/9 9 (Kc7)} 188. Rg7 { 1.14/41 5 (Lf1)} Ka5 {0.12/9 10 (Lf4)} 189. Rc7 {1.14/45 6 (Lf1)} Kb6 {0.10/9 9 } 190. Rg7 {1.14/46 6} Ka5 {0.11/9 11} 191. Rg4 {1.14/46 8 (Lf1)} Kb4 {0.09/9 13 (Kb6)} 192. Rg8 {1.14/44 10 (Lf1)} Ka4 {0.11/9 10 (Sd7)} 193. Rc8 {1.13/47 36 (Lf1)} Kb4 {0.11/9 10} 194. Rf8 {1.05/49 13 (Ta8)} Ka5 {0.11/9 11 (Ka3)} 195. Rb8 {1.05/42 4} Nd7 {0.11/10 8 (Lf4)} 196. Rb1 {1.05/40 5} Nc5 {0.12/10 5 (Lf4)} 197. Kd2 {1.05/43 9} Ka4 {0.12/10 9 (Lf4+)} 198. Bb5+ {1.04/45 11 (Ke3)} Ka3 {0.11/10 14 (Ka5)} 199. Kc2 {1.04/48 4} Ka2 {0.10/11 6 (Ld4)} 200. Be2 { 1.04/49 7 (Lf1)} Ka3 {0.08/9 8} 201. Rb8 {1.00/48 14} Ka4 {0.05/9 9 (Sxe4)} 202. Bf1 {1.00/45 4} Ka5 {0.04/7 19 (Lf4)} 203. Bc4 {0.00/58 29 (Tb1)} Nd7 { 0.00/5 11} 204. Ra8+ {0.00/78 7 (Tb1)} Kb4 {0.00/2 12} 205. Bf1 {0.00/127 0 Draw agreed.} 1/2-1/2

Wenn es zum Endspiel kommt, ähnelt sich das Spiel der Engines immer mehr, denn alle verwenden Tablebases. Aber auch hier bleibt sich Fat Fritz treu: in schwierigen Endspielen sucht er nach aktiven Ideen und strebt nach Dominanz. Mir persönlich gefällt dabei vor allem sein prophylaktisches Spiel. In der folgenden Partie verteidigt Fat Fritz eine etwas schlechtere Stellung auf unkonventionelle, aber sehr prinzipielle Weise.

[Event "Rapid match 20m+10s"] [Site ""] [Date "2019.10.24"] [Round "13"] [White "Fat Fritz"] [Black "Stockfish 10 64 POPCNT"] [Result "1/2-1/2"] [ECO "A87"] [Annotator "Elshan"] [PlyCount "145"] [EventDate "2019.??.??"] [TimeControl "1200+10"] 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. O-O O-O 6. c4 d6 7. Nc3 Qe8 8. d5 { Last book move.} Na6 {0.25/31 95} 9. Be3 {0.69/13 31} Bd7 {0.17/31 51} 10. Rb1 {0.73/13 20 (Tc1)} c5 {0.37/30 47 (c6)} 11. Qd2 {0.75/18 26} Nc7 {0.44/31 19} 12. b4 {0.72/18 34} cxb4 {0.32/32 17} 13. Rxb4 {0.73/19 13} b6 {0.59/36 107} 14. h3 {0.72/18 58 (Tb3)} Na6 {0.27/31 20 (Dc8)} 15. Rb3 {0.71/19 30} Qc8 { 0.44/32 22} 16. Nd4 {0.67/22 87} Nc5 {0.22/32 45 (Dxc4)} 17. Ra3 {0.86/18 22} Nfe4 {0.30/36 57 (Sce4)} 18. Nxe4 {0.90/17 32} Nxe4 {0.40/35 16} 19. Qd3 { 0.87/20 58 (Dc2)} Nc5 {0.33/36 20} 20. Qd1 {0.94/13 38 (Dd2)} Ne4 {0.33/36 26 (Lf6)} 21. Qd3 {0.89/18 35 (Dc2)} Nc5 {0.35/37 19} 22. Qd2 {0.88/23 24} Ne4 { 0.46/36 34} 23. Qc2 {0.83/24 15} b5 {0.43/36 22} 24. Bxe4 {0.81/24 23} Bxd4 { 0.42/35 17} 25. Bxd4 {0.81/24 20} fxe4 {0.48/37 65} 26. g4 {0.78/27 69 (Te3)} Qxc4 {0.14/33 20} 27. Qxe4 {0.77/31 0} b4 {0.48/35 45} 28. Rd3 {0.76/29 18} Rae8 {0.25/33 14} 29. Rd2 {0.75/27 23} e5 {0.26/38 98} 30. dxe6 {0.73/26 22} Rxe6 {0.26/36 13} 31. Qb7 {0.73/26 30} Rf7 {0.62/37 115 (Te7)} 32. Qb8+ { 1.07/19 92} Bc8 {0.33/34 13 (Te8)} 33. Bxa7 {0.67/21 125 (Le3)} Rb7 {0.00/38 13 (h5)} 34. Qa8 {0.24/19 32} d5 {0.00/43 19} 35. Rdd1 {0.15/21 27} Ra6 { 0.00/43 33} 36. Rc1 {0.14/20 16} Rbxa7 {0.00/41 28} 37. Qxc8+ {0.13/18 15} Qxc8 {0.00/45 28} 38. Rxc8+ {0.14/17 15} Kg7 {0.00/45 22} 39. Rb8 {0.13/16 141 (Tb1) } Rxa2 {0.00/42 16} 40. e3 {0.13/14 0} Rb2 {0.00/43 43 (d4)} 41. Kg2 {0.18/11 54 (Tb5)} Kf6 {0.00/40 24 (Td7)} 42. Kg3 {0.17/13 69} Rf7 {0.00/41 18} 43. Rd1 {0.17/14 8 (Tb6+)} Kg7 {0.00/41 15} 44. Rf1 {0.16/13 18} Rb3 {0.00/42 35} ( 44... Rd7 45. Rb5 d4 46. exd4 Rxd4 47. Rb7+ Kf6) 45. Kg2 {0.16/13 38 [#] Here is another difference between FF to any other engine or human way of thinking: It has a great interest in fortresses. Like the previous game, it creates a situation making it impossible for White to improve. By contrast, GMs would try to activate the king and trade the d-pawn for the e-pawn and hold a 2-3 endgame.} h5 {0.00/43 29} (45... Rd7 46. Rb5 d4 47. exd4 Rxd4) 46. Rb5 { 0.16/13 42 (Td1)} h4 $1 {0.00/40 23 (d4)} 47. Rxd5 {0.25/12 26} Rb2 {0.00/43 20 Now white is tied down.} 48. Rb5 {0.23/12 36 (Td4)} Kh6 {0.00/39 14 (b3)} 49. Rb8 {0.23/11 52 (Tb6)} Re7 {0.00/46 39 (b3)} 50. Re1 {0.26/11 24 (Kf3)} Rf7 {0.00/45 17} 51. Rf1 {0.19/13 9} b3 {0.00/46 10 (Te7)} 52. Rb5 {0.23/11 37} Kg7 {0.00/46 11} 53. Rb6 {0.22/11 22 (g5)} Kf8 {0.00/42 11 (Kh6)} 54. e4 {0.24/11 19 (g5)} Rf4 {0.00/37 12 (Kg7)} 55. e5 {0.19/12 18 (Kg1)} Ke7 {0.00/39 13 (g5)} 56. Kg1 {0.24/13 14} Kd7 {0.00/41 17 (Te4)} 57. e6+ {0.20/15 19 (Td1+)} Kc7 { 0.00/43 15} 58. Rb5 {0.14/16 19} Kd6 {0.00/41 16} 59. Rb6+ {0.12/15 13} Kc7 { 0.00/44 20} 60. Re1 {0.10/14 27 (e7)} Rfxf2 {0.00/46 9} 61. e7 {0.08/12 16} Rg2+ {0.00/45 24} 62. Kh1 {0.07/9 0} Rh2+ {0.00/46 19} 63. Kg1 {0.05/7 0} Rbg2+ {0.00/50 70 (Thg2+)} 64. Kf1 {0.12/13 0} Rf2+ {0.00/53 19 (Tb2)} 65. Kg1 { 0.13/10 0} Rfg2+ {0.00/47 17} 66. Kf1 {0.08/7 0} Rf2+ {0.00/50 20 (Td2)} 67. Kg1 {0.13/6 0} Rhg2+ {0.00/49 59} 68. Kh1 {0.08/6 0} Kxb6 {0.00/57 48 (Th2+)} 69. e8=Q {0.03/9 85} Rh2+ {0.00/58 5} 70. Kg1 {0.02/7 0} Rhg2+ {0.00/66 11} 71. Kh1 {0.01/5 0} Rh2+ {0.00/64 29} 72. Kg1 {0.00/3 0} Rhg2+ {0.00/67 8} 73. Kh1 { 0.00/2 0 Remis angenommen} 1/2-1/2

Fat Fritz lernt schnell!

Die folgende Partie ist ein weiteres Beispiel dafür, wie gut Fat Fritz Bauernstrukturen behandelt. In einer als leicht anrüchig geltenden Variante der Aljechin-Verteidigung überspielt Fat Fritz mit Weiß Stockfish souverän.

[Event "Rapid match 20m+10s"] [Site ""] [Date "2019.10.24"] [Round "19"] [White "Fat Fritz"] [Black "Stockfish 10 64 POPCNT"] [Result "1-0"] [ECO "B04"] [Annotator "Elshan"] [PlyCount "145"] [EventDate "2019.??.??"] [TimeControl "1200+10"] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 {Last book move.} g6 {0.31/33 114} 5. Bc4 { 0.77/17 23} Nb6 {0.26/28 9} 6. Bb3 {0.77/17 13} Bg7 {0.23/30 20 (a5)} 7. Ng5 { 0.77/24 26 (De2)} e6 {0.10/29 20} 8. Qf3 {0.75/24 19} O-O {0.45/34 87 (De7)} 9. Qh3 {0.61/20 43} h6 {0.24/30 8} 10. Ne4 {0.55/20 77 (Sf3)} d5 {0.24/31 19} 11. Nc5 {0.55/17 0} Kh7 {0.24/32 24} 12. Be3 {0.58/17 40 (c3)} N8d7 {0.23/32 75} 13. Nxd7 {0.59/18 15} Bxd7 {0.20/31 11} 14. Nd2 {0.61/16 19} Na4 {0.22/35 42 (f5)} (14... c5) 15. O-O-O {0.70/17 53 (Tb1)} b6 {0.19/29 58 (b5)} (15... c5 16. Bxa4 Bxa4 17. dxc5 Qa5 18. Kb1 b6) 16. g4 {1.11/16 49 (Kb1)} c5 {0.15/27 11 } 17. Rhg1 {1.13/19 20 (c3)} Rh8 {0.50/32 69} 18. f4 {1.15/18 21} Qc7 {0.49/29 14 (Tc8)} 19. c3 {1.10/22 47} b5 {0.16/30 20} 20. Kb1 {1.11/21 23 (dxc5)} c4 { -0.09/28 11 (Tab8)} 21. Bxa4 {1.17/17 51} bxa4 {0.21/31 41} 22. a3 {1.19/15 19} Rab8 {0.58/33 133 (Thb8)} 23. Ka1 {1.37/12 51} Rb7 {0.59/35 12 (Tb6)} 24. Nb1 { 1.50/11 48 (Tb1)} Kg8 {1.07/32 87 (Db6)} 25. Qg2 {1.51/13 44} Kf8 {1.26/38 106} 26. Rdf1 {1.52/14 29} Qc8 {1.17/40 77 (Ke8)} 27. h4 {1.75/19 43} h5 {2.01/34 44 } 28. f5 {1.78/20 18} exf5 {1.90/32 10} 29. gxf5 {1.81/19 14} Bxf5 {1.86/36 12} 30. Qxd5 {1.83/18 15} Rd7 {2.08/36 24 (Ld3)} 31. Qg2 {2.16/15 67} Rc7 {2.44/37 67} 32. Nd2 {2.16/15 41} Kg8 {2.27/36 48 (Ld3)} 33. Rf4 {2.16/14 58 (Tf2)} Kh7 {2.11/30 8} 34. Ne4 {2.13/15 65} Bxe4 {2.16/36 14} 35. Qxe4 {2.12/14 0} Re8 { 2.15/38 26 (Db7)} 36. Rgf1 {2.09/11 80 (Tg5)} Kg8 {1.61/35 13 (De6)} 37. R4f2 { 2.05/11 51 (Dc2)} Qb7 {1.59/35 37} 38. Qc2 {2.02/11 16} Qc6 {1.58/37 7} 39. Qc1 {2.02/11 35} Rd7 {1.73/41 65 (De4)} 40. Bh6 {2.08/12 27} Bh8 {1.73/41 9 (De4)} 41. Rg1 {2.13/10 46} Qd5 {1.73/42 10 (Tb7)} 42. Qc2 {2.14/10 28} Kh7 {1.73/43 10} 43. Bc1 {2.05/11 37} Bg7 {1.73/45 13} 44. Qxa4 {2.03/11 24} Re6 {1.73/45 12 } 45. Qc2 {2.02/14 16 (Lg5)} Rb7 {1.73/42 13} 46. Re2 {2.06/14 21 (Tgf1)} Kh8 { 1.73/40 21 (Lf8)} 47. Qe4 {2.12/10 44 (Teg2)} Qxe4 {2.02/36 29 (Db5)} 48. Rxe4 {2.40/12 22} Kh7 {2.19/35 15} 49. Bf4 {2.45/14 17 (Ka2)} Rd7 {1.69/28 7} 50. Ka2 {2.54/14 19 (Kb1)} f6 {1.87/33 19} 51. Rge1 {2.58/14 11} fxe5 {1.97/33 28} 52. dxe5 {2.64/13 27 (Lg3)} Rc7 {2.02/31 9} 53. Rd1 {2.65/12 11 (Lg3)} Bf8 { 2.73/32 58} 54. Rdd4 {2.70/15 29} Be7 {2.89/31 23} 55. Bh2 {2.76/16 19} g5 { 2.71/31 12} 56. hxg5 {2.78/15 12} Bxg5 {3.08/30 23} 57. Rxc4 {2.87/14 21} Rxc4 {3.20/27 10} 58. Rxc4 {2.84/13 10} Kg6 {3.40/28 13} 59. b4 {2.87/12 15} Kf5 { 3.50/27 10 (h4)} 60. Kb3 {3.17/11 31} Rg6 {3.68/26 10 (h4)} 61. Rd4 {3.45/10 30 (Tc7)} Be7 {3.90/24 10} 62. Rd2 {3.57/10 16} Bh4 {4.18/27 10 (h4)} 63. a4 { 3.91/9 28} Be1 {4.49/27 10 (Le7)} 64. Re2 {5.56/9 12 (Td1)} Bh4 {4.50/30 3} 65. a5 {4.67/9 23 (Td2)} Ke6 {4.71/28 17 (Le7)} 66. a6 {4.76/8 12 (Td2)} Rg7 { 5.23/26 10 (Le7)} 67. c4 {4.72/8 16 (b5)} Rd7 {5.78/24 10 (Tg4)} 68. c5 { 5.72/7 10 (Tg2)} Be7 {7.03/26 10 (Td4)} 69. Kc4 {6.96/7 9 (Tc2)} Rd1 {6.12/23 2 } 70. Kb5 {5.88/8 14 (Tc2)} h4 {7.19/27 18 (Tb1)} 71. Rb2 {5.41/8 8 (Tg2)} Bd8 {7.53/27 10 (Ta1)} 72. Kc6 {6.23/7 10} Rd7 {8.25/25 10 (Le7)} 73. Rg2 {7.20/8 12} 1-0

Wenn Fat Fritz das gleiche System mit Schwarz spielen muss, dann erkennt er sehr schnell, welche Gefahren ihm in der geschlossenen Stellung und den Raumvorteil des Weißen drohen. Um diese Gefahren abzuwenden, nimmt er eine etwas schlechtere Stellung in Kauf, die er jedoch halten kann.

[Event "Rapid match 20m+10s"] [Site ""] [Date "2019.10.24"] [Round "20"] [White "Stockfish 10 64 POPCNT"] [Black "Fat Fritz"] [Result "1/2-1/2"] [ECO "B04"] [Annotator "Elshan"] [PlyCount "289"] [EventDate "2019.??.??"] [TimeControl "1200+10"] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 {Last book move.} dxe5 {0.54/15 16} 5. Nxe5 {1.00/31 64 (c4)} c6 {0.52/14 31} 6. Be2 {1.05/29 17 (Sf3)} Bf5 {0.55/15 25 (Sd7)} 7. O-O {0.97/28 27} Nd7 {0.55/16 19} 8. Nf3 {0.95/33 43} e6 {0.54/15 26 (h6)} 9. c4 {1.03/30 13} N5f6 {0.54/14 12} 10. Nh4 {0.84/35 136} Bg6 {0.53/14 37 (Lxb1)} 11. Nc3 {0.85/29 73} Bd6 {0.54/14 37} 12. f4 {0.89/29 43 (c5)} Ne4 { 0.29/14 54 (Lf5)} 13. Nxg6 {1.01/28 9 (g3)} Nxc3 {0.22/13 38} 14. bxc3 { 0.91/29 19} hxg6 {0.21/12 14} 15. g3 {0.91/31 28} O-O {0.21/11 47 (Da5)} 16. Be3 {0.98/30 29 (a4)} c5 {0.13/10 50 (b6)} 17. Qd3 {0.85/30 42} Qc7 {0.15/11 75 (Tc8)} 18. Bf2 {0.95/31 16 (a4)} Rfd8 {0.18/10 46 (Tac8)} 19. Qf3 {1.02/31 42} b6 {0.23/10 32 (Tac8)} 20. a4 {0.89/32 61} Rac8 {0.20/12 21} 21. Kg2 { 0.85/32 12 (Tfb1)} f5 {0.24/11 30 (Le7)} 22. Bd3 {0.67/33 88 (Tab1)} cxd4 { 0.23/14 39 (Sf6)} 23. cxd4 {0.69/30 16} Bb4 {0.22/19 9} 24. Rfc1 {0.79/34 103 (Tab1)} Nf6 {0.06/11 43} 25. Rc2 {0.69/32 31} Kh7 {0.05/17 62 (Dd7)} 26. Rb1 { 0.68/31 43} a5 {0.05/23 9} 27. Rbc1 {0.68/34 48 (c5)} Qd7 {0.05/14 40} 28. Re2 {0.68/35 10} Ng4 {0.10/15 28 (Te8)} 29. Bg1 {0.82/28 11} Nf6 {0.10/14 11} 30. Bf2 {0.68/35 62 (h3)} Ng4 {0.06/14 60 (Te8)} 31. Bg1 {0.55/31 19} Nf6 {0.08/15 14} 32. Kh1 {0.68/34 65} Qxa4 {0.00/18 41 (Tc7)} 33. Rxe6 {0.00/33 25} Rd6 { 0.00/23 0 (b5)} 34. Rxd6 {0.31/31 26 (Te5)} Bxd6 {-0.04/24 56} 35. Qf1 { 0.39/35 38} Ba3 {-0.04/30 27 (Dc6+)} 36. Ra1 {0.94/28 11 (Tb1)} Qb4 {-0.04/18 91 (Dc6+)} 37. Rb1 {0.13/33 62} Qc3 {-0.04/24 0 (Dd6)} 38. Rxb6 {0.00/35 27} Re8 {-0.04/21 0} 39. Be2 {0.00/38 9} Bc1 {-0.03/22 109} 40. c5 {0.00/42 21} a4 {-0.03/22 0 (Le3)} 41. Rb1 {0.09/34 13} Be3 {-0.03/21 6} 42. Bb5 {0.09/38 11} Rd8 {-0.02/20 20 (Dxd4)} 43. Qc4 {0.00/42 29 (Dd3)} Qd2 {-0.02/19 49} 44. Qd3 { 0.00/42 10} Qxd3 {-0.01/20 11} 45. Bxd3 {0.00/44 31} Bxd4 {-0.02/18 23} 46. Ba6 {0.00/45 10 (Lc4)} a3 {-0.06/17 64} 47. c6 {0.00/44 11} a2 {-0.03/18 56} 48. Rf1 {0.00/46 10} Ne8 {-0.03/18 7} 49. Bxd4 {0.00/47 12} Rxd4 {-0.02/17 4} 50. Ra1 {0.00/48 11} Ra4 {-0.01/16 22} 51. Be2 {0.00/49 11} Nc7 {-0.01/16 13 (Kh6)} 52. h4 {0.00/45 10 (Ld1)} Kh6 {-0.08/12 83} 53. Kg2 {0.00/43 11 (Lf3)} Nd5 { -0.10/14 19 (Kh7)} 54. Kh2 {0.00/44 17 (Kf2)} Kh7 {-0.13/13 18} 55. Kh3 { 0.00/48 12} Ra3 {-0.15/14 14 (Kh6)} 56. c7 {0.00/47 12} Rc3 {-0.16/13 11} 57. Ba6 {0.00/49 9 (Txa2)} Nxf4+ {-0.09/14 48} 58. Kh2 {0.00/1 0} Rc2+ {-0.11/20 0 (Txc7)} 59. Kh1 {0.00/49 20 (Kg1)} Rxc7 {-0.14/17 13} 60. gxf4 {0.00/50 7} Rc2 {-0.12/16 6} 61. Bd3 {0.00/54 29} Rb2 {-0.11/14 10} 62. Kg1 {0.00/55 13} Kh8 { -0.09/14 32 (Tb3)} 63. Kf1 {0.00/48 19 (Kh1)} Rh2 {-0.08/13 18} 64. Kg1 { 0.00/49 40 (Ke1)} Rb2 {-0.09/13 9} 65. Kf1 {0.00/52 7} Kh7 {-0.06/12 9} 66. Ke1 {0.00/51 50 (Kg1)} Kh6 {-0.09/12 15} 67. Kf1 {0.00/52 37} Rh2 {-0.06/12 13} 68. Kg1 {0.00/49 4} Rb2 {-0.05/10 9} 69. Kf1 {0.00/51 6} Rh2 {-0.04/9 13} 70. Ke1 { 0.00/52 12 (Kg1)} Rh1+ {-0.09/10 16} 71. Bf1 {0.00/47 4} Rxh4 {-0.09/11 9 (Th2) } 72. Rxa2 {0.09/35 6} Rxf4 {-0.09/9 4} 73. Ra6 {0.09/42 8 (Tf2)} Kh7 {-0.10/9 16} 74. Be2 {0.09/46 7} g5 {-0.09/10 8} 75. Bh5 {0.09/46 7} g4 {-0.08/11 10} 76. Bg6+ {0.09/47 9} Kh6 {-0.05/10 5} 77. Bxf5+ {0.09/49 14} Kg5 {-0.04/9 25 (Kh5)} 78. Be6 {0.09/43 7 (Lc8)} g3 {-0.05/8 12} 79. Bd5 {0.09/42 7} Rf5 { -0.03/7 12 (Tf2)} 80. Bg2 {0.09/43 8} Rf2 {-0.02/7 10 (g6)} 81. Ra5+ {0.09/43 9 (La8)} Kh4 {-0.03/8 11 (Tf5)} 82. Ra4+ {0.09/46 15} Kg5 {-0.01/8 9} 83. Bf1 { 0.09/45 6 (La8)} Rh2 {-0.05/7 10 (Tf4)} 84. Be2 {0.09/45 9 (Ta7)} Rh1+ { -0.09/8 12 (Th4)} 85. Kd2 {0.48/42 6} Rh4 {-0.09/8 8} 86. Ra7 {0.48/43 8 (Ta1)} g6 {-0.07/8 11} 87. Ke3 {0.58/44 8 (Lf3)} g2 {-0.05/8 10 (Tf4)} 88. Ra5+ { 0.90/42 7 (Kf2)} Kh6 {-0.04/9 11 (Kf6)} 89. Kf2 {0.91/44 6} Re4 {-0.02/8 11 (Tb4)} 90. Bf3 {0.91/47 7} Rb4 {-0.02/7 10 (Td4)} 91. Kxg2 {0.91/47 8} Kg7 { 0.00/7 10 (Tb2+)} 92. Kg3 {0.91/43 9 (Ta2)} Kf6 {0.00/6 10} 93. Bd1 {0.91/42 7 (Ta2)} Rd4 {0.00/7 10 (Tb2)} 94. Bc2 {0.96/38 6 (Ta1)} Ke7 {0.00/7 10 (Td6)} 95. Bxg6 {1.08/39 7 (Ta2)} Rd8 {0.00/6 10 (Ke6)} 96. Be4 {1.08/43 9 (Ta7+)} Rd1 {0.00/6 10 (Tf8)} 97. Kf3 {1.09/48 14 (Kf4)} Rd8 {0.00/6 10 (Ke6)} 98. Bd5 { 1.09/46 6 (Kf4)} Kf6 {0.00/6 10 (Tf8+)} 99. Kf4 {1.10/43 10} Rd6 {0.01/7 7} 100. Rc5 {1.10/46 14 (Tb5)} Rb6 {0.01/7 11} 101. Bc4 {1.10/47 14 (Tc4)} Rb4 { 0.01/7 11 (Td6)} 102. Rc6+ {1.11/40 7} Ke7 {0.05/8 5} 103. Ke5 {1.11/43 64} Kd7 {0.08/8 13} 104. Rc5 {1.11/40 35 (Ld5)} Rb6 {0.05/8 8} 105. Bb5+ {1.11/44 19 (Ld5)} Ke7 {0.04/8 13} 106. Rc7+ {1.11/42 11} Kd8 {0.03/8 5} 107. Rd7+ { 1.11/41 10} Kc8 {0.04/8 7} 108. Rd5 {1.11/31 10 (La4)} Kc7 {0.02/8 15 (Kb7)} 109. Rd7+ {1.11/40 6 (Tc5+)} Kc8 {0.03/8 10 (Kb8)} 110. Rd5 {1.11/37 6 (Lc6)} Kc7 {0.02/7 13 (Kb7)} 111. Rc5+ {1.11/48 6} Kb7 {0.03/8 9 (Kd8)} 112. Bc4 { 1.11/35 19 (Lc6+)} Rh6 {0.03/7 9} 113. Bd5+ {1.11/41 5 (Le6)} Kb6 {0.04/7 9} 114. Rc8 {1.11/43 4} Rg6 {0.04/7 12} 115. Ra8 {1.11/40 21 (Kd4)} Rh6 {0.03/7 12 } 116. Rb8+ {1.11/44 11} Kc5 {0.02/7 6} 117. Rc8+ {1.11/43 11} Kb6 {0.05/8 14} 118. Rb8+ {1.11/36 4 (Kd4)} Kc5 {0.01/7 6} 119. Rc8+ {1.11/43 16} Kb6 {0.04/7 13} 120. Be4 {1.12/45 4 (Kd4)} Rh4 {0.02/7 12 (Ka5)} 121. Kd4 {1.12/41 5} Rh6 { 0.04/7 10 (Tf4)} 122. Rb8+ {1.12/44 5} Kc7 {0.02/7 5} 123. Rb7+ {1.12/42 23} Kc8 {0.06/8 13} 124. Rf7 {1.12/40 13 (Kc5)} Kd8 {0.04/7 9 (Th4)} 125. Kd5 { 1.12/40 9 (Ke5)} Ke8 {0.03/7 10 (Th4)} 126. Ra7 {1.12/36 9 (Tb7)} Rb6 {0.04/8 13 (Kd8)} 127. Bf5 {1.12/37 11 (Ke5)} Kf8 {0.07/8 10 (Tb5+)} 128. Be6 {1.12/34 10 (Ke5)} Ke8 {0.06/8 6} 129. Bf7+ {1.11/30 11 (Ke5)} Kd8 {0.06/8 14} 130. Kc5 {1.11/30 10} Rf6 {0.07/8 8} 131. Kd5 {1.11/29 10 (La2)} Rb6 {0.05/8 6} 132. Be6 {1.10/26 10 (Kc5)} Ke8 {0.04/8 9} 133. Bg4 {1.09/25 10 (Ke5)} Kd8 {0.04/7 17 (Kf8)} 134. Rd7+ {1.02/22 10 (Ld7)} Ke8 {0.02/7 4} 135. Rh7 {1.02/21 10 (Le6)} Kd8 {0.04/7 16} 136. Be6 {0.77/18 10 (Ld7)} Ke8 {0.04/8 10 (Tb5+)} 137. Ke5 { 1.02/30 10} Kd8 {0.05/8 6} 138. Rd7+ {0.09/34 10 (Ld7)} Kc8 {0.03/8 13} 139. Ra7+ {0.09/33 3 (Kd5)} Kb8 {0.02/7 8 (Kd8)} 140. Ra5 {0.09/39 17 (Ta4)} Kc7 { 0.01/7 11} 141. Ba2 {0.00/26 5 (Tc5+)} Rb2 {0.00/7 12 (Kb8)} 142. Bc4 {0.00/41 15 (Lg8)} Rh2 {0.00/6 10 (Tc2)} 143. Rc5+ {0.00/52 4 (Ta8)} Kb6 {0.00/4 9} 144. Rb5+ {0.00/65 5 (Tc8)} Kc6 {0.00/2 10 (Kc7)} 145. Bf1 {0.00/127 0 Draw agreed.} 1/2-1/2

Genauigkeit und technisches Können

Manchmal entscheidet sich Fat Fritz für riskante Varianten, die er dann jedoch sehr genau spielt. Ohne gute Hardware scheitert das Leela-Programm in diesen Stellungen manchmal und übersieht gute taktische Möglichkeiten. Dies ist ein generelles Problem für Neuronale Netze, die nicht auf guter Hardware laufen, aber es scheint, als ob Fat Fritz dabei ist, dieses Problem in den Griff zu bekommen. In der folgenden Partie gerät Fat Fritz nicht wirklich in Gefahr, obwohl er nicht die beste Variante spielt.

[Event "Rapid match 20m+10s"] [Site ""] [Date "2019.10.24"] [Round "23"] [White "Fat Fritz"] [Black "Stockfish 10 64 POPCNT"] [Result "1/2-1/2"] [ECO "B09"] [Annotator "Elshan"] [SetUp "1"] [FEN "N4rk1/pp3pbp/4b1p1/8/4P3/2qB1Q1P/P1P1K1P1/1R5R b - - 0 19"] [PlyCount "48"] [EventDate "2019.??.??"] [TimeControl "1200+10"] {[#]} 19... Qc6 {0.00/39 40 [#] From this point onward, Fat Fritz demonstrates great and accurate defensive skills.} 20. Nb6 {0.22/26 65} axb6 {0.09/40 31} 21. Qe3 {0.22/31 0} Qc3 {0.00/39 14} 22. Qxb6 {0.19/32 37} Bc4 {0.00/42 21} 23. Bxc4 {0.15/32 29} Qxc4+ {0.00/45 141} 24. Kf3 {0.14/31 0} f5 {0.00/39 19 (Dc3+) } 25. e5 {0.16/20 174} Qe4+ {0.00/42 44} 26. Kf2 {0.15/22 0} Qf4+ {0.00/44 29} 27. Kg1 {0.12/23 62} Bxe5 {0.00/41 18} 28. Rd1 {0.12/22 0} Re8 {0.00/40 37} 29. Qf2 {0.12/22 0} Qa4 {0.00/40 26 (De4)} 30. h4 {0.12/16 96 (Df3)} Bb8 {0.00/42 21} 31. Re1 {0.10/19 116} Rd8 {0.00/44 38 (Tc8)} 32. Qf3 {0.09/14 50} Ba7+ { 0.00/42 14 (Dd4+)} 33. Kf1 {0.07/11 18} Rd2 {0.00/47 53 (Dc4+)} 34. Re2 { 0.09/17 54 (Db3+)} Rd1+ {0.00/45 29 (Txe2)} 35. Re1 {0.23/17 0} Qc4+ {0.00/45 24 (Db5+)} 36. Qe2 {0.05/9 33} Qf4+ {0.00/50 20} 37. Qf3 {0.03/7 23} Rxe1+ { 0.00/46 19 (Dc4+)} 38. Kxe1 {0.13/11 0} Qc1+ {0.00/51 21} 39. Qd1 {0.03/9 54 (Ke2)} Qe3+ {0.00/50 20} 40. Qe2 {0.01/7 31} Qc1+ {0.00/51 17} 41. Qd1 { 0.01/5 0} Qe3+ {0.00/52 49} 42. Qe2 {0.01/3 51} Qc1+ {0.00/58 85} 43. Qd1 { 0.00/2 0 Remis angenommen} 1/2-1/2

Eine Glanzleistung im Stile Karpovs

Beide Programme, Stockfish und Fat Fritz, spielten in den Wettkämpfen eine Reihe guter Partien. Eine Glanzleistung von Fat Fritz war die folgende Positionspartie im Stile Karpovs. Fat Fritz kam mit positionellem Vorteil aus der Eröffnung heraus, aber manövrierte noch eine Weile, bevor er einen entscheidenden Durchbruch am Damenflügel unternahm, den er mit einem phantastischen Pseudo-Opfer krönte. Ich lasse die Züge für sich selber sprechen:

[Event "Rapid match 20m+10s"] [Site ""] [Date "2019.10.25"] [Round "45"] [White "Fat Fritz"] [Black "Stockfish 10 64 POPCNT"] [Result "1-0"] [ECO "B90"] [Annotator "Elshan"] [PlyCount "135"] [EventDate "2019.??.??"] [TimeControl "1200+10"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 {Last Book move} 6. f3 { 0.43/14 19} e5 {0.00/31 40} 7. Nb3 {0.40/16 19} Be6 {0.16/34 81 (Le7)} 8. Be3 { 0.41/15 26} Be7 {0.30/33 50 (h5)} 9. Qd2 {0.43/20 30} O-O {0.15/33 48} 10. O-O-O {0.46/24 25} Nbd7 {0.17/35 24} 11. g4 {0.47/23 18} b5 {0.05/32 8} 12. g5 {0.46/22 23} Nh5 {0.00/35 19} 13. Kb1 {0.47/21 26} Nb6 {0.00/36 41} 14. Na5 { 0.48/21 19 (Sd5)} Rc8 {0.00/37 36 (Dc7)} 15. a3 {0.51/21 58 (Sd5)} g6 {0.00/35 21 (Dc7)} 16. h4 {0.54/18 64} Qc7 {0.00/37 10} 17. Rh2 {0.51/21 32} Rfe8 { 0.00/39 18} 18. Nd5 {0.60/20 67} Nxd5 {0.00/41 18} 19. exd5 {0.58/27 0} Bd7 { 0.00/43 19} 20. Qb4 {0.44/22 104 (Lh3)} Bf5 {0.00/38 41 (Sg3)} 21. Nc6 { 0.79/15 36} Bf8 {0.00/39 28} 22. Bd3 {0.75/15 27 (Lh3)} Bxd3 {0.00/40 22} 23. Rxd3 {0.73/16 11} f5 {0.00/40 17 (Dd7)} 24. Rb3 {0.71/16 50 (Td1)} Ng7 { 0.00/39 51 (f4)} 25. Re2 {0.77/16 76 (Th1)} f4 {0.00/38 30 (Df7)} 26. Bf2 { 0.78/14 18} Qf7 {0.00/36 13 (Sf5)} 27. Qe4 {0.83/14 29 (Td2)} Nf5 {0.00/38 53} 28. Rd2 {0.85/16 22} Bg7 {0.00/35 52 (h6)} 29. Rd1 {0.94/14 40 (c4)} Nd4 { 0.00/38 16} 30. Rc3 {0.92/13 47 (Tbd3)} Rc7 {0.11/39 187 (Sf5)} 31. Rcd3 { 0.89/13 43 (a4)} Nf5 {0.00/40 19 (Tcc8)} 32. Rb3 {0.84/13 57} Rb7 {0.00/43 128 (Se7)} 33. Rb4 {0.99/10 28 (Sa5)} Rf8 {0.00/37 20} 34. Rb3 {0.96/11 23} Qd7 { 0.00/35 23 (Te8)} 35. Rc1 {0.94/12 57 (Tc3)} Re8 {0.00/36 22 (Sg3)} 36. Rb4 { 0.97/10 37 (Tg1)} Kh8 {0.00/36 41 (Tf8)} 37. Rg1 {1.07/10 25} Rc8 {0.00/36 23 (Df7)} 38. Na5 {0.80/16 44 (Th1)} Rbb8 {0.00/40 12} 39. Nc6 {0.81/22 9} Rb7 { 0.00/40 22} 40. Rc1 {0.75/22 46 (Th1)} Rf8 {0.00/38 47 (Se7)} 41. Rb3 {1.02/12 24 (Th1)} Rc7 {0.00/38 21 (Df7)} 42. Ka2 {1.04/11 34 (Dd3)} Rb7 {0.00/35 19} 43. Rg1 {1.01/11 32 (Kb1)} Rc8 {0.00/38 32 (Df7)} 44. Rc1 {1.01/12 26 (Th1)} Qf7 {0.02/37 104 [#] (Tf8)} 45. c4 {1.24/17 29} Ng3 {0.54/37 100 (bxc4)} 46. Qd3 {1.24/18 28} bxc4 {0.59/31 13} 47. Qxc4 {1.19/18 13} Rxb3 {0.51/35 21} 48. Qxb3 {1.19/14 14} Re8 {0.45/34 8 (Dd7)} 49. Bb6 {1.41/19 39} Qd7 {0.52/34 15} 50. Nd8 $3 {1.62/21 19 It is not only for the depth but the briliant idea behind this move: Black must take and then:} Rxd8 {1.80/33 48} 51. Bxd8 { 1.73/22 14} Qxd8 {3.61/32 15} 52. Qb7 {1.78/21 9} Qg8 {3.99/35 20} 53. a4 $1 { 1.86/22 21 Black's two minor pieces are rather clumsy. Black loses one way or another.} Nf5 {4.13/34 15 (Lf8)} 54. Qxa6 {2.73/14 43} Qxd5+ {4.22/33 4} 55. Qc4 {3.02/16 25} Qg8 {4.47/37 13} 56. Qxg8+ {3.19/16 17 (a5)} Kxg8 {0.45/1 0} 57. a5 {3.29/15 8} e4 {4.49/32 9} 58. a6 {3.33/14 19} Bd4 {4.34/34 6} 59. Rc4 { 3.41/13 8 Threatening Rxd4 followed by a7-a8} Bg1 {4.85/35 13} 60. Rxe4 { 3.46/12 26} Kf7 {5.07/37 22 (d5)} 61. Rxf4 {4.33/11 32} d5 {5.38/36 12} 62. Rb4 {4.62/11 17} Ke6 {5.78/37 10 (Sd6)} 63. Rb7 {4.78/11 21} Nxh4 {6.29/37 10} 64. f4 {4.77/12 10 (b4)} Ng2 {5.04/25 3} 65. Rxh7 {4.77/12 35} Nxf4 {7.18/30 18} 66. a7 {4.99/12 1 (b4)} Bxa7 {7.00/26 3} 67. Rxa7 {4.69/10 8} d4 {9.25/29 17 (Sh3)} 68. Ra5 {5.61/9 26} 1-0

Auch die folgende Partie, die Nummer 49, zeigt, wie gut Neuronale Netze positionelles Schach spielen.

[Event "Rapid match 20m+10s"] [Site ""] [Date "2019.10.25"] [Round "49"] [White "Fat Fritz"] [Black "Stockfish 10 64 POPCNT"] [Result "1-0"] [ECO "C02"] [Annotator "Elshan"] [PlyCount "145"] [EventDate "2019.??.??"] [TimeControl "1200+10"] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 c4 {Last book move.} 7. Nbd2 {0.35/14 20} Na5 {-0.25/33 77} 8. Rb1 {0.35/14 22} Bd7 {-0.17/31 15} 9. Be2 {0.37/15 31} Ne7 {-0.32/33 30 (0-0-0)} 10. h4 {0.39/14 30 (0-0)} O-O-O { -0.27/33 66} 11. h5 {0.37/16 21 (Sf1)} Kb8 {-0.25/33 29 (f6)} 12. Nf1 {0.47/13 41} h6 {-0.19/31 23} 13. Bf4 {0.49/12 31} Nb3 {-0.11/32 57 (a6)} 14. Ne3 { 0.63/12 67 (S3d2)} Ba4 {-0.04/33 23 (Ka8)} 15. Nd2 {0.70/12 32} Nc6 {0.00/31 30 (Sxd2)} 16. Nxb3 {0.70/13 35 (Lg3)} Na5 {0.00/34 72} 17. Kf1 {0.65/13 66 (Lg3)} Bxb3 {0.00/40 26 (a6)} 18. Qd2 {0.68/14 20} Ba4 {0.00/39 11} 19. Bd1 { 0.67/13 20 (De1)} Bxd1 {0.00/35 17} 20. Rxd1 {0.66/12 25} a6 {0.00/37 16 (Le7)} 21. Rh3 {0.64/10 92 (Lg3)} Be7 {0.00/37 36} 22. Kg1 {0.62/11 41 (Lg3)} Rdg8 { 0.00/35 13} 23. Bh2 {0.59/11 36 (De2)} Qd8 {0.00/35 34 (Ka7)} 24. Qe2 {0.56/10 43 (Lg3)} Ka7 {0.00/37 39} 25. f4 {0.56/11 19 (Df3)} g6 {0.00/29 16} 26. g4 { 0.62/12 24 (Dg4)} Nb3 {0.00/33 56 (Sc6)} 27. Kh1 {0.72/11 42} Qe8 {0.00/38 41 (Dd7)} 28. Qf3 {0.73/14 31} Bd8 {0.00/37 35 (Th7)} 29. hxg6 {0.77/18 34} Rxg6 { 0.09/32 31 (fxg6)} 30. f5 {1.86/13 33 (Lg3)} Rg7 {0.00/38 34 (Tgg8)} 31. f6 { 1.89/13 24 (Lf4)} Rg6 {0.97/34 66} 32. Bf4 {1.89/11 22} Bc7 {1.00/35 28} 33. Ng2 {1.95/11 53 (Kg2)} Qg8 {1.34/26 82} 34. Rh4 {1.96/11 20} Qd8 {1.82/30 158 (Dh7)} 35. Be3 {2.27/11 49 (Kh2)} Na5 {2.46/30 84 (Dg8)} 36. Rd2 {2.40/11 39 (Sf4)} Nb3 {2.44/32 17 (Sc6)} 37. Rf2 {2.57/11 39 (Td1)} Rgg8 {3.38/30 83 (Dg8) } 38. Bxh6 {2.89/10 41 (Sf4)} Qd7 {3.65/26 36 (Lb6)} 39. Be3 {3.16/9 51 (g5)} Rxh4+ {4.29/30 54 (Sa5)} 40. Nxh4 {3.37/10 28} Rh8 {4.55/29 14} 41. Rh2 { 3.57/10 27} Na5 {5.06/34 56 (Da4)} 42. g5 {3.92/9 43 (Sg2)} Nc6 {5.17/32 22} 43. Ng2 {4.05/9 36} Rg8 {5.35/32 15 (De8)} 44. Rh7 {4.21/8 49} Nd8 {5.45/31 15 (Lb6)} 45. Qd1 {4.33/8 32 (Tg7)} Qb5 {4.48/27 19 (De8)} 46. Qc2 {4.56/8 24 (De2)} Qb6 {5.14/32 58 (De8)} 47. Kg1 {5.08/8 45 (De2)} Kb8 {5.43/31 29 (Lb8)} 48. Kf1 {5.45/8 35 (De2)} Ka7 {5.47/29 15} 49. Kf2 {5.48/8 25 (Kg1)} Qc6 { 6.00/29 16 (Sc6)} 50. Nh4 {5.36/7 26} Rf8 {6.40/31 10 (De8)} 51. Nf3 {6.20/7 21 (g6)} Rg8 {6.60/29 10 (De8)} 52. Kg3 {5.99/7 26 (Sh4)} Ba5 {5.51/26 10 (De8) } 53. Bf4 {6.00/7 23 (Sh4)} Qb5 {5.56/29 10 (De8)} 54. Rh6 {5.74/7 21 (Sh4)} Rf8 {5.74/29 10 (De8)} 55. Rh7 {5.85/7 19} Rg8 {5.51/28 5} 56. Bd2 {5.44/7 18 (Sh4)} Bc7 {5.61/28 10 (De8)} 57. a4 {5.43/7 19 (Sh4)} Qc6 {5.20/24 7 (De8)} 58. Be3 {5.43/7 17 (Sh4)} Kb8 {5.66/29 18 (De8)} 59. Kg4 {5.44/7 16 (Sh4)} b5 { 5.38/24 7 (De8)} 60. axb5 {6.18/8 9} Qxb5 {6.24/28 12 (axb5)} 61. Rh2 {6.69/7 18 (Sh4)} Qe8 {6.27/28 10 (a5)} 62. Kg3 {6.81/7 15 (Dh7)} a5 {5.58/24 4 (Th8)} 63. Rh7 {5.96/7 15 (Dh7)} a4 {5.34/25 6} 64. Rh1 {6.03/7 9 (Th6)} Ba5 {5.60/28 19 (Db5)} 65. Ra1 {7.48/7 11 (Th6)} Bb6 {5.85/24 11 (Th8)} 66. Qxa4 {11.19/7 11 (Txa4)} Qxa4 {5.22/28 2} 67. Rxa4 {11.46/8 8} Kc7 {6.13/34 18 (Sc6)} 68. Ra1 {16.83/7 22} Rh8 {6.59/31 7 (Sc6)} 69. Rg1 {15.38/7 13 (g6)} Kc6 {6.30/31 8 (Kd7)} 70. Rb1 {14.77/7 11 (Tf1)} Kd7 {6.68/31 15 (Lxd4)} 71. Bf4 {14.01/7 11 (Tf1)} Ba5 {6.65/31 9 (Lxd4)} 72. Ra1 {13.33/7 11 (g6)} Bc7 {6.69/34 5 (Lxc3)} 73. Kg4 {13.55/7 11 (g6)} 1-0

Hier sind schließlich noch einmal alle Partien des Wettkampfs:

Fat Fritz vs Stockfish 8

 

Fat Fritz vs Stockfish 10

 

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Elshan Moradiabadi ist Großmeister und wurde in Teheran geboren, wo er auch aufwuchs. 2012 emigrierte er in die USA, wo er als Schachtrainer und Spieler lebt.
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