TCEC Season 20 - Revision history

75.104.104.5: /* Games 5/6 */

2023-06-25T04:16:14Z

Games 5/6

← Previous revision		Revision as of 04:16, 25 June 2023
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	Because the openings were ordered in ascending bias, it was very unexpected for an opening pair this early to yield a 1-0, 1-0 result. In analyzing the book exit position (diagram), GM Sadler found that older versions of Stockfish could not tell how dangerous White's position is until it had searched to a high depth.		Because the openings were ordered in ascending bias, it was very unexpected for an opening pair this early to yield a 1-0, 1-0 result. In analyzing the book exit position (diagram), GM Sadler found that older versions of Stockfish could not tell how dangerous White's position is until it had searched to a high depth.

	'''Stockfish–Leela Chess Zero, game 5 (~~Queen's~~ ~~Gambit~~ ~~Declined~~)''': '''1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 b6 6. e4 Bb7 7. e5 Bxg2 8. exf6 g6 9. Bg5 d5 10. Qg4 Bxh1 11. O-O-O dxc4 12. Bc2 Bb7''' 13. Nh3 Re8 14. Qh4 Bf3 15. Rg1 e5 16. Bd2 Nd7 17. Ng5 Nxf6 18. dxe5 Bxc3 19. Bxc3 Nh5 20. Qxc4 Qd5 21. Qh4 Qc6 22. Qh3 Rad8 23. Qxf3 Qxf3 24. Nxf3 Nf4 25. Bd1 b5 26. Kc2 a6 27. a3 c5 28. Rg4 Nd5 29. Ba5 Rd7 30. Bd2 f6 31. exf6 Nxf6 32. Rg1 c4 33. Kc1 Ne4 34. Be3 Rd5 35. h4 Rf5 36. Kb1 Kh8 37. Rg2 Rd5 38. Bc2 Kg7 39. Rg4 Nc5 40. Ng5 Nd3 41. b3 h6 42. Nf3 Rc8 43. Re4 Rf5 44. Nd2 Nxf2 45. Re7+ Kf6 46. Ra7 Nd3 47. Bxh6 Re8 48. Rxa6+ Re6 49. Bg5+ Ke5 50. Rxe6+ Kxe6 51. a4 bxa4 52. bxc4 Ne5 53. Bxf5+ Kxf5 54. Kb2 Ke6 55. Ka3 Kd7 56. Kxa4 Kc6 57. Nb3 Kd7 58. Kb5 Nf7 59. c5 Nd6+ 60. cxd6 Kxd6 1-0		'''Stockfish–Leela Chess Zero, game 5 (Nimzo Indian Defense)''': '''1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 b6 6. e4 Bb7 7. e5 Bxg2 8. exf6 g6 9. Bg5 d5 10. Qg4 Bxh1 11. O-O-O dxc4 12. Bc2 Bb7''' 13. Nh3 Re8 14. Qh4 Bf3 15. Rg1 e5 16. Bd2 Nd7 17. Ng5 Nxf6 18. dxe5 Bxc3 19. Bxc3 Nh5 20. Qxc4 Qd5 21. Qh4 Qc6 22. Qh3 Rad8 23. Qxf3 Qxf3 24. Nxf3 Nf4 25. Bd1 b5 26. Kc2 a6 27. a3 c5 28. Rg4 Nd5 29. Ba5 Rd7 30. Bd2 f6 31. exf6 Nxf6 32. Rg1 c4 33. Kc1 Ne4 34. Be3 Rd5 35. h4 Rf5 36. Kb1 Kh8 37. Rg2 Rd5 38. Bc2 Kg7 39. Rg4 Nc5 40. Ng5 Nd3 41. b3 h6 42. Nf3 Rc8 43. Re4 Rf5 44. Nd2 Nxf2 45. Re7+ Kf6 46. Ra7 Nd3 47. Bxh6 Re8 48. Rxa6+ Re6 49. Bg5+ Ke5 50. Rxe6+ Kxe6 51. a4 bxa4 52. bxc4 Ne5 53. Bxf5+ Kxf5 54. Kb2 Ke6 55. Ka3 Kd7 56. Kxa4 Kc6 57. Nb3 Kd7 58. Kb5 Nf7 59. c5 Nd6+ 60. cxd6 Kxd6 1-0

	'''Leela Chess Zero–Stockfish, game 6 (~~Queen's~~ ~~Gambit~~ ~~Declined~~)''':		'''Leela Chess Zero–Stockfish, game 6 (Nimzo Indian Defense)''':
	'''1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 b6 6. e4 Bb7 7. e5 Bxg2 8. exf6 g6 9. Bg5 d5 10. Qg4 Bxh1 11. O-O-O dxc4 12. Bc2 Bb7''' 13. Nh3 Re8 14. Qh4 Bf3 15. Rg1 e5 16. Be3 Nd7 17. Ng5 Nxf6 18. Nxf3 Bxc3 19. bxc3 e4 20. Ne5 Nd5 21. Qh5 Nxe3 22. fxe3 Qf6 23. Qe2 b5 24. Rf1 Qe7 25. Bxe4 Rad8 26. Qc2 f6 27. Nc6 Qa3+ 28. Kb1 f5 29. Bxf5 Rd6 30. Be4 Rf8 31. Ne7+ Kg7 32. Rxf8 Kxf8 33. Nd5 Rd7 34. h4 Rf7 35. Nf4 Rf6 36. Qb2 Qxb2+ 37. Kxb2 Ke8 38. a4 bxa4 39. Ka3 Kd8 40. Bc2 Kc8 41. Kxa4 Ra6+ 42. Kb5 Ra1 43. Nd5 Rc1 44. Ba4 Ra1 45. Kb4 Re1 46. Kxc4 h6 47. Ne7+ Kd8 48. Nc6+ Kc8 49. Nxa7+ Kb7 50. Nc6 g5 51. hxg5 hxg5 52. Kd3 Ra1 53. Bb5 Kb6 54. c4 g4 55. Ke2 Kb7 56. e4 Kc8 57. e5 Kd7 58. Nb8+ Ke7 59. d5 Ra2+ 60. Kf1 Ra1+ 61. Kf2 Kf7 62. Nc6 Kg6 63. c5 Ra2+ 64. Kg3 Kg5 65. e6 Ra3+ 66. Kg2 Kf4 67. Bf1 Rg3+ 68. Kf2 Rf3+ 69. Ke1 g3 70. Bg2 Rf2 71. e7 Rxg2 72. e8=Q Rg1+ 73. Ke2 Rg2+ 74. Kd3 Ra2 75. Qf8+ Kg5 76. Nd4 Rf2 77. Qe7+ Kg4 78. Qe6+ Kg5 79. Qe5+ Kh4 80. Ke3 Rf1 81. Qg7 Rf2 82. Ne2 Rxe2+ 83. Kxe2 g2 84. Qxg2 1-0		'''1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 b6 6. e4 Bb7 7. e5 Bxg2 8. exf6 g6 9. Bg5 d5 10. Qg4 Bxh1 11. O-O-O dxc4 12. Bc2 Bb7''' 13. Nh3 Re8 14. Qh4 Bf3 15. Rg1 e5 16. Be3 Nd7 17. Ng5 Nxf6 18. Nxf3 Bxc3 19. bxc3 e4 20. Ne5 Nd5 21. Qh5 Nxe3 22. fxe3 Qf6 23. Qe2 b5 24. Rf1 Qe7 25. Bxe4 Rad8 26. Qc2 f6 27. Nc6 Qa3+ 28. Kb1 f5 29. Bxf5 Rd6 30. Be4 Rf8 31. Ne7+ Kg7 32. Rxf8 Kxf8 33. Nd5 Rd7 34. h4 Rf7 35. Nf4 Rf6 36. Qb2 Qxb2+ 37. Kxb2 Ke8 38. a4 bxa4 39. Ka3 Kd8 40. Bc2 Kc8 41. Kxa4 Ra6+ 42. Kb5 Ra1 43. Nd5 Rc1 44. Ba4 Ra1 45. Kb4 Re1 46. Kxc4 h6 47. Ne7+ Kd8 48. Nc6+ Kc8 49. Nxa7+ Kb7 50. Nc6 g5 51. hxg5 hxg5 52. Kd3 Ra1 53. Bb5 Kb6 54. c4 g4 55. Ke2 Kb7 56. e4 Kc8 57. e5 Kd7 58. Nb8+ Ke7 59. d5 Ra2+ 60. Kf1 Ra1+ 61. Kf2 Kf7 62. Nc6 Kg6 63. c5 Ra2+ 64. Kg3 Kg5 65. e6 Ra3+ 66. Kg2 Kf4 67. Bf1 Rg3+ 68. Kf2 Rf3+ 69. Ke1 g3 70. Bg2 Rf2 71. e7 Rxg2 72. e8=Q Rg1+ 73. Ke2 Rg2+ 74. Kd3 Ra2 75. Qf8+ Kg5 76. Nd4 Rf2 77. Qe7+ Kg4 78. Qe6+ Kg5 79. Qe5+ Kh4 80. Ke3 Rf1 81. Qg7 Rf2 82. Ne2 Rxe2+ 83. Kxe2 g2 84. Qxg2 1-0
	{{clear}}		{{clear}}

Banedon: /* Game 77 */

2023-05-08T02:32:49Z

Game 77

← Previous revision		Revision as of 02:32, 8 May 2023
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	In a powerful attacking game, Leela opened lines against its king in an effort to complete its development, and Stockfish sliced through.		In a powerful attacking game, Leela opened lines against its king in an effort to complete its development, and Stockfish sliced through.

	'''Stockfish–Leela Chess Zero, game 77 (Sicilian ~~Defen'''se~~)''': 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 Nc6 8. Qd2 Be7 9. O-O-O O-O 10. g4 Nd7''' 11. h4 Nxd4 12. Bxd4 b5 13. g5 Qc7 14. h5 b4 15. Na4 Qa5 16. b3 Bxg5 17. Be3 h6 18. f4 Be7 19. Rg1 Kh8 20. e5 Rb8 21. exd6 Bf6 22. a3 e5 23. Bc4 exf4 24. Bd4 Qf5 25. Rdf1 Bg5 26. Rxg5 hxg5 27. Re1 f6 28. Re7 f3 29. h6 gxh6 30. Kb2 f2 31. Bxf2 Ne5 32. Bd5 Bd7 33. Nc5 Bc6 34. Be6 Qf4 35. Be3 Qg3 36. Qd4 bxa3+ 37. Ka2 Rfe8 38. Rc7 Qg2 39. Qc3 Qf3 40. Bd4 Qxc3 41. Bxc3 Bf3 42. Bf5 Rbd8 43. Bg6 Nxg6 44. Bxf6+ Kg8 45. Rg7+ Kf8 46. d7 Re2 47. Bxd8 Kxg7 48. Ba5 Rxc2+ 49. Kxa3 Rxc5 50. d8=Q Rc6 51. Bc3+ Rxc3 52. Qd4+ Kf7 53. Qxc3 Be2 54. Qc7+ Kf6 55. Qh2 Bb5 56. Qxh6 Kf5 57. Qh7 Kf6 58. Kb4 Nf4 59. Kc3 Bd3 60. Qh8+ Kf5 61. Qc8+ Kg6 62. Qe8+ Kf5 63. Kd4 Kg4 64. Qd7+ Kg3 65. Ke5 Bb5 66. Qd8 Nh3 67. Kf5 Be2 68. Qd2 Kf2 69. Qd4+ Kg2 70. Qe3 Bb5 71. Kg4 Bd7+ 72. Kh5 Bb5 73. Qe4+ Kf2 74. Qf5+ Kg3 75. Qg4+ Kh2 76. Qf3 Be8+ 77. Kh6 Bb5 78. Kg6 Be8+ 79. Kf5 Bd7+ 80. Kf6 Bb5 81. Ke5 Ng1 82. Qf2+ Kh1 83. Ke4 Be2 84. Qg3 g4 85. Ke3 Bf3 86. Qe1 Kh2 87. Qf2+ Kh1 88. b4 Nh3 89. Qg3 Ng1 90. Qd6 Nh3 91. Qxa6 Kh2 92. Qd6+ Kg2 93. b5 Ba8 94. Qa6 Bd5 95. b6 g3 96. b7 Nf2 97. b8=Q Ng4+ 98. Kd4 Nf2 99. Kxd5 1-0		'''Stockfish–Leela Chess Zero, game 77 (Sicilian Defense)''': '''1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 Nc6 8. Qd2 Be7 9. O-O-O O-O 10. g4 Nd7''' 11. h4 Nxd4 12. Bxd4 b5 13. g5 Qc7 14. h5 b4 15. Na4 Qa5 16. b3 Bxg5 17. Be3 h6 18. f4 Be7 19. Rg1 Kh8 20. e5 Rb8 21. exd6 Bf6 22. a3 e5 23. Bc4 exf4 24. Bd4 Qf5 25. Rdf1 Bg5 26. Rxg5 hxg5 27. Re1 f6 28. Re7 f3 29. h6 gxh6 30. Kb2 f2 31. Bxf2 Ne5 32. Bd5 Bd7 33. Nc5 Bc6 34. Be6 Qf4 35. Be3 Qg3 36. Qd4 bxa3+ 37. Ka2 Rfe8 38. Rc7 Qg2 39. Qc3 Qf3 40. Bd4 Qxc3 41. Bxc3 Bf3 42. Bf5 Rbd8 43. Bg6 Nxg6 44. Bxf6+ Kg8 45. Rg7+ Kf8 46. d7 Re2 47. Bxd8 Kxg7 48. Ba5 Rxc2+ 49. Kxa3 Rxc5 50. d8=Q Rc6 51. Bc3+ Rxc3 52. Qd4+ Kf7 53. Qxc3 Be2 54. Qc7+ Kf6 55. Qh2 Bb5 56. Qxh6 Kf5 57. Qh7 Kf6 58. Kb4 Nf4 59. Kc3 Bd3 60. Qh8+ Kf5 61. Qc8+ Kg6 62. Qe8+ Kf5 63. Kd4 Kg4 64. Qd7+ Kg3 65. Ke5 Bb5 66. Qd8 Nh3 67. Kf5 Be2 68. Qd2 Kf2 69. Qd4+ Kg2 70. Qe3 Bb5 71. Kg4 Bd7+ 72. Kh5 Bb5 73. Qe4+ Kf2 74. Qf5+ Kg3 75. Qg4+ Kh2 76. Qf3 Be8+ 77. Kh6 Bb5 78. Kg6 Be8+ 79. Kf5 Bd7+ 80. Kf6 Bb5 81. Ke5 Ng1 82. Qf2+ Kh1 83. Ke4 Be2 84. Qg3 g4 85. Ke3 Bf3 86. Qe1 Kh2 87. Qf2+ Kh1 88. b4 Nh3 89. Qg3 Ng1 90. Qd6 Nh3 91. Qxa6 Kh2 92. Qd6+ Kg2 93. b5 Ba8 94. Qa6 Bd5 95. b6 g3 96. b7 Nf2 97. b8=Q Ng4+ 98. Kd4 Nf2 99. Kxd5 1-0
	{{clear}}		{{clear}}

Banedon: /* Game 59 */ Syntax fix

2023-05-08T02:32:30Z

Game 59: Syntax fix

← Previous revision		Revision as of 02:32, 8 May 2023
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	This opening was the [[Modern_Benoni#7.f4:_Taimanov_Attack_and_other_lines\|Taimanov variation of the Modern Benoni]], a line known to be difficult for Black. Nonetheless, Stockfish was able to hold the reverse game successfully while out-assessing Leela to win this game. Both engines saw the same main line after 28. Qxd5, but Stockfish evaluated the key position after 37. Ne5 as a cast-iron win, an evaluation that turned out to be correct.		This opening was the [[Modern_Benoni#7.f4:_Taimanov_Attack_and_other_lines\|Taimanov variation of the Modern Benoni]], a line known to be difficult for Black. Nonetheless, Stockfish was able to hold the reverse game successfully while out-assessing Leela to win this game. Both engines saw the same main line after 28. Qxd5, but Stockfish evaluated the key position after 37. Ne5 as a cast-iron win, an evaluation that turned out to be correct.

	~~'''~~'''Stockfish–Leela Chess Zero, game 59 (Modern Benoni)''': 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7''' 8. Bb5+ Nfd7 9. a4 Na6 10. Nf3 Nb4 11. O-O a6 12. Be2 O-O 13. Be3 Nf6 14. Nd2 Rb8 15. Kh1 Re8 16. Bf2 b5 17. axb5 axb5 18. Bxb5 Bg4 19. Qa4 Bd7 20. Bxd7 Nxd7 21. Bg1 Nb6 22. Qb3 f5 23. e5 dxe5 24. d6+ Kh8 25. Nf3 exf4 26. Rfd1 Nd7 27. Nd5 Nxd5 28. Qxd5 Qb6 29. b4 Bxa1 30. Rxa1 Nf6 31. Qxc5 Qxb4 32. d7 Rf8 33. Qxb4 Rxb4 34. Bc5 Rbb8 35. Bxf8 Rxf8 36. Rd1 Rd8 37. Ne5 Kg7 38. Kg1 Kf8 39. Kf1 g5 40. Rd4 h5 41. h4 g4 42. Ke2 Kg8 43. Kf1 Kf8 44. Rd1 Kg8 45. Rd6 Kg7 46. Ke2 Ne4 47. Nc6 Nxd6 48. Nxd8 Kf6 49. Nc6 Nf7 50. d8=Q+ Nxd8 51. Nxd8 Ke5 52. Kf2 Kd5 53. Nb7 Kc6 54. Na5+ Kd5 55. Nb3 Ke4 56. Nc5+ Ke5 57. Nd3+ Ke4 58. Nc5+ Ke5 59. Nd3+ Ke4 60. Nb4 g3+ 61. Ke2 f3+ 62. gxf3+ Kd4 63. Nc2+ Ke5 64. Ke3 f4+ 65. Ke2 Kd5 66. Ne1 Kd6 67. Kf1 g2+ 68. Kxg2 Ke5 69. Nd3+ Kf5 70. Kf2 Kg6 71. Nxf4+ 1-0		'''Stockfish–Leela Chess Zero, game 59 (Modern Benoni)''': '''1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7''' 8. Bb5+ Nfd7 9. a4 Na6 10. Nf3 Nb4 11. O-O a6 12. Be2 O-O 13. Be3 Nf6 14. Nd2 Rb8 15. Kh1 Re8 16. Bf2 b5 17. axb5 axb5 18. Bxb5 Bg4 19. Qa4 Bd7 20. Bxd7 Nxd7 21. Bg1 Nb6 22. Qb3 f5 23. e5 dxe5 24. d6+ Kh8 25. Nf3 exf4 26. Rfd1 Nd7 27. Nd5 Nxd5 28. Qxd5 Qb6 29. b4 Bxa1 30. Rxa1 Nf6 31. Qxc5 Qxb4 32. d7 Rf8 33. Qxb4 Rxb4 34. Bc5 Rbb8 35. Bxf8 Rxf8 36. Rd1 Rd8 37. Ne5 Kg7 38. Kg1 Kf8 39. Kf1 g5 40. Rd4 h5 41. h4 g4 42. Ke2 Kg8 43. Kf1 Kf8 44. Rd1 Kg8 45. Rd6 Kg7 46. Ke2 Ne4 47. Nc6 Nxd6 48. Nxd8 Kf6 49. Nc6 Nf7 50. d8=Q+ Nxd8 51. Nxd8 Ke5 52. Kf2 Kd5 53. Nb7 Kc6 54. Na5+ Kd5 55. Nb3 Ke4 56. Nc5+ Ke5 57. Nd3+ Ke4 58. Nc5+ Ke5 59. Nd3+ Ke4 60. Nb4 g3+ 61. Ke2 f3+ 62. gxf3+ Kd4 63. Nc2+ Ke5 64. Ke3 f4+ 65. Ke2 Kd5 66. Ne1 Kd6 67. Kf1 g2+ 68. Kxg2 Ke5 69. Nd3+ Kf5 70. Kf2 Kg6 71. Nxf4+ 1-0
	{{clear}}		{{clear}}

Dicklyon: case fix (via WP:JWB)

2023-03-18T20:17:36Z

case fix (via WP:JWB)

← Previous revision		Revision as of 20:17, 18 March 2023
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	QL winner Seer won League 4 with a dominating performance, scoring 8 wins and only losing one game. It further scored a win against 2nd-placed Weiss, as well as defeating tail-enders A0lite, Bagatur, and FabChess 2-0. Weiss remained in contention until the very last round in spite of its loss to Seer. It won 9 games, but also lost three, to finally finish half a point behind. Fourth-place finisher Monolith scored a win against Weiss and third-place finisher Tucano, but nonetheless finished behind Tucano because of Tucano's strong performance against the bottom half of the field: Tucano scored +5 against the four bottom-placed engines, while Monolith was only even. With three promotion slots only, Tucano squeezed past Monolith, half a point ahead.		QL winner Seer won League 4 with a dominating performance, scoring 8 wins and only losing one game. It further scored a win against 2nd-placed Weiss, as well as defeating tail-enders A0lite, Bagatur, and FabChess 2-0. Weiss remained in contention until the very last round in spite of its loss to Seer. It won 9 games, but also lost three, to finally finish half a point behind. Fourth-place finisher Monolith scored a win against Weiss and third-place finisher Tucano, but nonetheless finished behind Tucano because of Tucano's strong performance against the bottom half of the field: Tucano scored +5 against the four bottom-placed engines, while Monolith was only even. With three promotion slots only, Tucano squeezed past Monolith, half a point ahead.

	===League ~~Table~~===		===League table===
	<onlyinclude>{{#invoke:Sports table\|main\|style=WDL		<onlyinclude>{{#invoke:Sports table\|main\|style=WDL

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	Wielding new [[NNUE]] [[evaluation function]]s, Minic and Nemorino finished comfortably above the competition in first and second place. The two engines tied in points - Nemorino had one fewer win, but also lost no games - and the head-to-head score was even as well. The tie was eventually broken by r-mobility, the first time this criterion was used. Nemorino wound up ahead.<ref>{{Cite web\|url=https://tcecbayeselo.chessdom.org/2020/12/10/tcec-season-20-l3-game-90-nemorino-6-03_nnue-weiss-1-2-dev/\|title=TCEC Season 20, L3, Game 90: Nemorino 6.03_NNUE-Weiss 1.2-dev – TCEC Bayes Elo}}</ref> r-mobility also broke the tie between third-placed Seer, fourth-placed Tucano and fifth-placed Combusken, this time causing Seer to promote. The three engines, along with six-placed Weiss, were very close with each other throughout the league. Seer threw away one game against Weiss (diagram), who also scored a win against Combusken. However, Weiss lost both games against Nemorino, and was only even against Counter, Topple and Pirarucu. This caused Weiss to eventually finish sixth, half a point behind its other three rivals.		Wielding new [[NNUE]] [[evaluation function]]s, Minic and Nemorino finished comfortably above the competition in first and second place. The two engines tied in points - Nemorino had one fewer win, but also lost no games - and the head-to-head score was even as well. The tie was eventually broken by r-mobility, the first time this criterion was used. Nemorino wound up ahead.<ref>{{Cite web\|url=https://tcecbayeselo.chessdom.org/2020/12/10/tcec-season-20-l3-game-90-nemorino-6-03_nnue-weiss-1-2-dev/\|title=TCEC Season 20, L3, Game 90: Nemorino 6.03_NNUE-Weiss 1.2-dev – TCEC Bayes Elo}}</ref> r-mobility also broke the tie between third-placed Seer, fourth-placed Tucano and fifth-placed Combusken, this time causing Seer to promote. The three engines, along with six-placed Weiss, were very close with each other throughout the league. Seer threw away one game against Weiss (diagram), who also scored a win against Combusken. However, Weiss lost both games against Nemorino, and was only even against Counter, Topple and Pirarucu. This caused Weiss to eventually finish sixth, half a point behind its other three rivals.

	===League ~~Table~~===		===League table===
	<onlyinclude>{{#invoke:Sports table\|main\|style=WDL		<onlyinclude>{{#invoke:Sports table\|main\|style=WDL

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	At the other end of the table, in a surprising reversal of fortunes, fellow promoted engine Minic, which had finished level on points with Nemorino in League 3, suffered 6 losses with only one win to finish in the relegation zone. r-mobility tiebreaks then condemned Minic to relegation, with the third promoted engine Seer finishing just above Minic in spite of not winning any games.		At the other end of the table, in a surprising reversal of fortunes, fellow promoted engine Minic, which had finished level on points with Nemorino in League 3, suffered 6 losses with only one win to finish in the relegation zone. r-mobility tiebreaks then condemned Minic to relegation, with the third promoted engine Seer finishing just above Minic in spite of not winning any games.

	===League ~~Table~~===		===League table===
	<onlyinclude>{{#invoke:Sports table\|main\|style=WDL		<onlyinclude>{{#invoke:Sports table\|main\|style=WDL

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	At the other end of the table, Defenchess was quickly left behind, but the last relegation spot was closely contested, with only one point separating four engines. Ultimately Nemorino was relegated.		At the other end of the table, Defenchess was quickly left behind, but the last relegation spot was closely contested, with only one point separating four engines. Ultimately Nemorino was relegated.

	===League ~~Table~~===		===League table===
	<onlyinclude>{{#invoke:Sports table\|main\|style=WDL		<onlyinclude>{{#invoke:Sports table\|main\|style=WDL

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	For the other contestants, traditional powerhouse Komodo played with a NNUE evaluation function for the first time. The effect was immediately apparent, as after flirting with relegation in previous seasons it finished solidly third this season, well behind Stockfish and Leela but ahead of AllieStein and Stoofvlees. Komodo was also the only engine other than Stockfish to win a game with the black pieces. AllieStein was the only engine to play without an update from the previous season, but still managed to finish fourth. Scorpio and Ethereal fought a close battle to avoid relegation. Scorpio blundered a few mate-in-ones due to an apparent bug in its code, but scored a head-to-head win, and was also able to draw two more games against AllieStein than Ethereal. It finally finished sixth, 1.5 points clear of the relegation zone. rofChade, the only engine playing without neural network-based eval, finished solidly last without winning a single opening.		For the other contestants, traditional powerhouse Komodo played with a NNUE evaluation function for the first time. The effect was immediately apparent, as after flirting with relegation in previous seasons it finished solidly third this season, well behind Stockfish and Leela but ahead of AllieStein and Stoofvlees. Komodo was also the only engine other than Stockfish to win a game with the black pieces. AllieStein was the only engine to play without an update from the previous season, but still managed to finish fourth. Scorpio and Ethereal fought a close battle to avoid relegation. Scorpio blundered a few mate-in-ones due to an apparent bug in its code, but scored a head-to-head win, and was also able to draw two more games against AllieStein than Ethereal. It finally finished sixth, 1.5 points clear of the relegation zone. rofChade, the only engine playing without neural network-based eval, finished solidly last without winning a single opening.

	===League ~~Table~~===		===League table===
	<onlyinclude>{{#invoke:Sports table\|main\|style=WDL		<onlyinclude>{{#invoke:Sports table\|main\|style=WDL

OAbot: Open access bot: doi added to citation with #oabot.

2023-01-28T21:45:30Z

Open access bot: doi added to citation with #oabot.

← Previous revision		Revision as of 21:45, 28 January 2023
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	\|}		\|}

	The 20th season of the [[Top Chess Engine Championship]] began on 1 December 2020 and ended on 1 February 2021. The defending champion was [[Stockfish (chess)\|Stockfish]], which defeated [[Leela Chess Zero]] in the [[TCEC Season 19\|previous season]]'s superfinal. The season 20 superfinal was a rematch between the same two engines. Stockfish once again came out ahead, winning by 6 games (+14 -8 =78).<ref>{{cite web\|url=https://www.panaynews.net/stockfish-beats-lczero-wins-tcec-20-superfinal/\|title=Stockfish beats LCZero, wins TCEC 20 Superfinal\|website=Panay News\|date=3 February 2021\|access-date=15 February 2022}}</ref><ref name="ICGAJournal">{{cite journal\|title=The 20th Top Chess Engine Championship, TCEC20\|journal=ICGA Journal\|volume=43\|issue=1\|pages=62–73\|date=21 May 2021\|doi=10.3233/ICG-210183\|last1=Haworth\|first1=Guy\|last2=Hernandez\|first2=Nelson\|s2cid=235452848\|url=https://content.iospress.com/articles/icga-journal/icg210183}}</ref><ref>{{cite book\|author=Sadler, Matthew\|title=The Silicon Road to Chess Improvement\|publisher=New In Chess\|year=2021\|isbn=978-9056919832\|url=https://www.newinchess.com/engine-training}}</ref>		The 20th season of the [[Top Chess Engine Championship]] began on 1 December 2020 and ended on 1 February 2021. The defending champion was [[Stockfish (chess)\|Stockfish]], which defeated [[Leela Chess Zero]] in the [[TCEC Season 19\|previous season]]'s superfinal. The season 20 superfinal was a rematch between the same two engines. Stockfish once again came out ahead, winning by 6 games (+14 -8 =78).<ref>{{cite web\|url=https://www.panaynews.net/stockfish-beats-lczero-wins-tcec-20-superfinal/\|title=Stockfish beats LCZero, wins TCEC 20 Superfinal\|website=Panay News\|date=3 February 2021\|access-date=15 February 2022}}</ref><ref name="ICGAJournal">{{cite journal\|title=The 20th Top Chess Engine Championship, TCEC20\|journal=ICGA Journal\|volume=43\|issue=1\|pages=62–73\|date=21 May 2021\|doi=10.3233/ICG-210183\|last1=Haworth\|first1=Guy\|last2=Hernandez\|first2=Nelson\|s2cid=235452848\|url=https://content.iospress.com/articles/icga-journal/icg210183\|doi-access=free}}</ref><ref>{{cite book\|author=Sadler, Matthew\|title=The Silicon Road to Chess Improvement\|publisher=New In Chess\|year=2021\|isbn=978-9056919832\|url=https://www.newinchess.com/engine-training}}</ref>

	==Overview==		==Overview==

Coolheights23: Bolded superfinal opening books

2022-12-11T03:57:31Z

Bolded superfinal opening books

Show changes

2A02:2454:8D55:500:99FA:7585:2A0:600C: removed the link to details for season 21 - this page was successfully nominated for deletion

2022-12-09T21:24:58Z

removed the link to details for season 21 - this page was successfully nominated for deletion

← Previous revision		Revision as of 21:24, 9 December 2022
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	\|style="text-align:left"\| ← [[TCEC Season 19]]		\|style="text-align:left"\| ← [[TCEC Season 19]]
	\|style="text-align:right"\| [[TCEC Season 21~~]] →~~		\|style="text-align:right"\| TCEC Season 21
	\|}		\|}

Spartaz: Wikipedia:Articles for deletion/TCEC Season 16 closed as Restart individually (XFDcloser)

2022-03-27T23:15:39Z

Wikipedia:Articles for deletion/TCEC Season 16 closed as Restart individually (XFDcloser)

← Previous revision		Revision as of 23:15, 27 March 2022
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	{{Article for deletion/dated\|page=TCEC Season 16\|timestamp=20220317182443\|year=2022\|month=March\|day=17\|substed=yes}}
	<!-- Once discussion is closed, please place on talk page: {{Old AfD multi\|page=TCEC Season 16\|date=17 March 2022\|result='''keep'''}} -->
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96.63.208.23: adding reference

2022-03-20T08:30:15Z

adding reference

← Previous revision		Revision as of 08:30, 20 March 2022
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	The 20th season of the [[Top Chess Engine Championship]] began on 1 December 2020 and ended on 1 February 2021. The defending champion was [[Stockfish (chess)\|Stockfish]], which defeated [[Leela Chess Zero]] in the [[TCEC Season 19\|previous season]]'s superfinal. The season 20 superfinal was a rematch between the same two engines. Stockfish once again came out ahead, winning by 6 games (+14 -8 =78).<ref>{{cite web\|url=https://www.panaynews.net/stockfish-beats-lczero-wins-tcec-20-superfinal/\|title=Stockfish beats LCZero, wins TCEC 20 Superfinal\|website=Panay News\|date=3 February 2021\|access-date=15 February 2022}}</ref><ref name="ICGAJournal">{{cite journal\|title=The 20th Top Chess Engine Championship, TCEC20\|journal=ICGA Journal\|volume=43\|issue=1\|pages=62–73\|date=21 May 2021\|doi=10.3233/ICG-210183\|last1=Haworth\|first1=Guy\|last2=Hernandez\|first2=Nelson\|s2cid=235452848\|url=https://content.iospress.com/articles/icga-journal/icg210183}}</ref>		The 20th season of the [[Top Chess Engine Championship]] began on 1 December 2020 and ended on 1 February 2021. The defending champion was [[Stockfish (chess)\|Stockfish]], which defeated [[Leela Chess Zero]] in the [[TCEC Season 19\|previous season]]'s superfinal. The season 20 superfinal was a rematch between the same two engines. Stockfish once again came out ahead, winning by 6 games (+14 -8 =78).<ref>{{cite web\|url=https://www.panaynews.net/stockfish-beats-lczero-wins-tcec-20-superfinal/\|title=Stockfish beats LCZero, wins TCEC 20 Superfinal\|website=Panay News\|date=3 February 2021\|access-date=15 February 2022}}</ref><ref name="ICGAJournal">{{cite journal\|title=The 20th Top Chess Engine Championship, TCEC20\|journal=ICGA Journal\|volume=43\|issue=1\|pages=62–73\|date=21 May 2021\|doi=10.3233/ICG-210183\|last1=Haworth\|first1=Guy\|last2=Hernandez\|first2=Nelson\|s2cid=235452848\|url=https://content.iospress.com/articles/icga-journal/icg210183}}</ref><ref>{{cite book\|author=Sadler, Matthew\|title=The Silicon Road to Chess Improvement\|publisher=New In Chess\|year=2021\|isbn=978-9056919832\|url=https://www.newinchess.com/engine-training}}</ref>

	==Overview==		==Overview==

B2TF at 18:24, 17 March 2022

2022-03-17T18:24:44Z

← Previous revision		Revision as of 18:24, 17 March 2022
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			{{Article for deletion/dated\|page=TCEC Season 16\|timestamp=20220317182443\|year=2022\|month=March\|day=17\|substed=yes}}
			<!-- Once discussion is closed, please place on talk page: {{Old AfD multi\|page=TCEC Season 16\|date=17 March 2022\|result='''keep'''}} -->
			<!-- End of AfD message, feel free to edit beyond this point -->
	{\| class="infobox" cellpadding="5" cellspacing="0" style="width:30%; border-collapse:collapse; text-align:center;"		{\| class="infobox" cellpadding="5" cellspacing="0" style="width:30%; border-collapse:collapse; text-align:center;"
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