Changes

the Top Chess Engine Championship (TCEC) Season 19 from August 06until October 16, 2020. After 93 games the [[#Superfinal|Superfinal]] was decided, when [[Stockfish]] aka [[Stockfish NNUE]] reached 50½ of 100 points of 50 game pairs to defend its TCEC title! In total Stockfish won 18 and lost 9 games, 8 game pairs with both White wins, 10 game pairs in favour to Stockfish - one game pair won by [[Leela Chess Zero|Leela]]. There was no win by Black.{| class="wikitable" style="margin: auto;"! [[#Superfinal|Superfinal]] :| [[Stockfish|Stockfish 202009282242_nn-baeb9ef2d183]] | - | [[Leela Chess Zero|LCZero v0.26.3-rc1_T60.SV.JH.92-190]] ! 54½-45½|}

| style="text-align:center;" | 2

| style="text-align:center;" | '''1'''

'''[[TCEC Season 18#Fourth|< Prev]] [[TCEC Season 20#Qual|Next Q]] [[TCEC Season 20#Fourth|Next 4 >]]'''<br/>

September 30- October 16, 2020, timecontrol 120'+10"<br/>[[Stockfish|Stockfish 202009282242_nn-baeb9ef2d183]] - [[Leela Chess Zero|LCZero v0.26.3-rc1_T60.SV.JH.92-190]] +18 =73 - [[Stockfish|Stockfish 202009282242_nn9, '''54½-baeb9ef2d183]] 45½''' <ref>[http://blogchess2016.blogspot.com/2020/09/opening-selection-tcec-19-superfinal.html Opening selection TCEC 19 superfinal] by [[Jeroen Noomen]], September 19, 2020</ref> {| class="wikitable"|- ! colspan="2" | Games ! colspan="2" | Opening ! colspan="2" | Results ! colspan="6" | Points |-! colspan="2" |! ECO ! Name ! Lc-St ! St-Lc ! Lc ! - ! St ! Lc ! - ! St |-| style="text-align:right;" | 1 | style="text-align:right;" | 2 ! B90 | Sicilian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=1&season=19 ½-½]| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=2&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 1 | - ! 1 |-| style="text-align:right;" | 3 | style="text-align:right;" | 4 ! E97 | King's Indian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=3&season=19 ½-½]| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=4&season=19 ½-½]| style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 2 | - ! 2 |-| style="text-align:right;" | 5 | style="text-align:right;" | 6 ! C11| French| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=5&season=19 1-0]| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=6&season=19 1-0]| style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 3| - ! 3 |-| style="text-align:right;" | 7 | style="text-align:right;" | 8 ! D15 | QGD, Slav| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=7&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=8&season=19 ½-½] | style="text-align:center;" | 1| - | style="text-align:center;" | 1 ! 4| - ! 4 |-| style="text-align:right;" | 9 | style="text-align:right;" | 10 ! C37| KGA| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=9&season=19 ½-½]| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=10&season=19 ½-½] | style="text-align:center;" | 1| - | style="text-align:center;" | 1! 5 | - ! 5 |-| style="text-align:right;" | 11 | style="text-align:right;" | 12! A80 | Dutch, 2.Bg5 variation| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=11&season=19 1-0]| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=12&season=19 1-0] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 6| - ! 6 |-| style="text-align:right;" | 13| style="text-align:right;" | 14! B06| Robatsch defence| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=13&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=14&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 7 | - ! 7|-| style="text-align:right;" | 15 | style="text-align:right;" | 16 ! D99 | Gruenfeld defence| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=15&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=16&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 8 | - ! 8|-| style="text-align:right;" | 17| style="text-align:right;" | 18 ! B45 | Sicilian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=17&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=18&season=19 1-0] | style="text-align:center;" | ½ | - | style="text-align:center;" | 1½! 8½ | - ! 9½ |-| style="text-align:right;" | 19 | style="text-align:right;" | 20 ! E90 | King's Indian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=19&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=20&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 9½ | - ! 10½ |-| style="text-align:right;" | 21 | style="text-align:right;" | 22 ! C67 | Ruy Lopez| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=21&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=22&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 10½ | - ! 11½ |-| style="text-align:right;" | 23 | style="text-align:right;" | 24 ! E12| Queen's Indian, Petrosian system| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=23&season=19 1-0] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=24&season=19 ½-½] | style="text-align:center;" | 1½ | - | style="text-align:center;" | ½ ! 12 | - ! 12|-| style="text-align:right;" | 25| style="text-align:right;" | 26 ! B01 | Scandinavian defence| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=25&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=26&season=19 ½-½] | style="text-align:center;" | 1| - | style="text-align:center;" | 1 ! 13| - ! 13 |-| style="text-align:right;" | 27 | style="text-align:right;" | 28 ! E10 | Blumenfeld counter-gambit accepted| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=27&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=28&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 14 | - ! 14|-| style="text-align:right;" | 29 | style="text-align:right;" | 30 ! B07 | Pirc defence| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=29&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=30&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 15 | - ! 15|-| style="text-align:right;" | 31 | style="text-align:right;" | 32! A61 | Benoni| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=31&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=32&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 16 | - ! 16 |-| style="text-align:right;" | 33| style="text-align:right;" | 34 ! B48| Sicilian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=33&season=19 1-0] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=34&season=19 1-0] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 17 | - ! 17 |-| style="text-align:right;" | 35| style="text-align:right;" | 36 ! E94| King's Indian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=35&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=36&season=19 ½-½] | style="text-align:center;" | 1| - | style="text-align:center;" | 1! 18 | - ! 18|-| style="text-align:right;" | 37 | style="text-align:right;" | 38 ! C19 | French| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=37&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=38&season=19 ½-½] | style="text-align:center;" | 1| - | style="text-align:center;" | 1 ! 19 | - ! 19 |-| style="text-align:right;" | 39 | style="text-align:right;" | 40! A45 | Trompovsky attack (Ruth, Opovcensky opening)| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=39&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=40&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 20| - ! 20 |-| style="text-align:right;" | 41| style="text-align:right;" | 42 ! C72| Ruy Lopez| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=41&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=42&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 21| - ! 21 |-| style="text-align:right;" | 43 | style="text-align:right;" | 44 ! E42| Nimzo-Indian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=43&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=44&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 22 | - ! 22|-| style="text-align:right;" | 45| style="text-align:right;" | 46 ! B06 | Robatsch (modern) defence| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=45&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=46&season=19 ½-½] | style="text-align:center;" | 1| - | style="text-align:center;" | 1 ! 23 | - ! 23|-| style="text-align:right;" | 47 | style="text-align:right;" | 48 ! A50 | Queen's Indian accelerated| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=47&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=48&season=19 1-0] | style="text-align:center;" | ½ | - | style="text-align:center;" | 1½ ! 23½ | - ! 24½|-| style="text-align:right;" | 49 | style="text-align:right;" | 50 ! A02| Bird| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=49&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=50&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 24½ | - ! 25½|-| style="text-align:right;" | 51| style="text-align:right;" | 52 ! B81| Sicilian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=51&season=19 1-0] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=52&season=19 1-0] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1! 25½ | - ! 26½|-| style="text-align:right;" | 53 | style="text-align:right;" | 54 ! E94| King's Indian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=53&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=54&season=19 1-0] | style="text-align:center;" | ½ | - | style="text-align:center;" | 1½ ! 26 | - ! 28|-| style="text-align:right;" | 55| style="text-align:right;" | 56! C30 | KGD| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=55&season=19 1-0] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=56&season=19 1-0] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 27| - ! 29|-| style="text-align:right;" | 57| style="text-align:right;" | 58 ! A81 | Dutch defence| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=57&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=58&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 28 | - ! 30|-| style="text-align:right;" | 59 | style="text-align:right;" | 60 ! B05 | Alekhine's defence| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=59&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=60&season=19 1-0] | style="text-align:center;" | ½ | - | style="text-align:center;" | 1½ ! 28½ | - ! 31½|-| style="text-align:right;" | 61 | style="text-align:right;" | 62 ! A56 | Czech Benoni defence| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=61&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=62&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 29½| - ! 32½|-| style="text-align:right;" | 63 | style="text-align:right;" | 64 ! C10| French, Paulsen variation| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=63&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=64&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 30½ | - ! 33½|-| style="text-align:right;" | 65 | style="text-align:right;" | 66 ! A59| Benko gambit| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=65&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=66&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 31½ | - ! 34½|-| style="text-align:right;" | 67 | style="text-align:right;" | 68 ! B60 | Sicilian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=67&season=19 1-0] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=68&season=19 1-0] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1! 32½ | - ! 35½|-| style="text-align:right;" | 69 | style="text-align:right;" | 70 ! E71 | King's Indian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=69&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=70&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 33½ | - ! 36½|-| style="text-align:right;" | 71 | style="text-align:right;" | 72 ! C46 | Four knights| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=71&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=72&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 34½ | - ! 37½|-| style="text-align:right;" | 73 | style="text-align:right;" | 74 ! D16| QGD Slav| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=73&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=74&season=19 1-0] | style="text-align:center;" | ½ | - | style="text-align:center;" | 1½ ! 35 | - ! 39|-| style="text-align:right;" | 75 | style="text-align:right;" | 76 ! B12 | Caro-Kann| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=75&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=76&season=19 1-0] | style="text-align:center;" | ½ | - | style="text-align:center;" | 1½ ! 35½ | - ! 40½|-| style="text-align:right;" | 77 | style="text-align:right;" | 78 ! A34| English| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=77&season=19 1-0] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=78&season=19 1-0] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 36½ | - ! 41½|-| style="text-align:right;" | 79 | style="text-align:right;" | 80 ! B06 | Robatsch defence| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=79&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=80&season=19 1-0] | style="text-align:center;" | ½ | - | style="text-align:center;" | 1½ ! 37 | - ! 43|-| style="text-align:right;" | 81 | style="text-align:right;" | 82 ! E86 | King's Indian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=81&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=82&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 38 | - ! 44|-| style="text-align:right;" | 83 | style="text-align:right;" | 84 ! B48| Sicilian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=83&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=84&season=19 1-0] | style="text-align:center;" | ½ | - | style="text-align:center;" | 1½ ! 38½| - ! 45½|-| style="text-align:right;" | 85 | style="text-align:right;" | 86 ! D07| QGD| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=85&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=86&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 39½| - ! 46½|-| style="text-align:right;" | 87 | style="text-align:right;" | 88 ! C92| Ruy Lopez| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=87&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=88&season=19 ½-½] | style="text-align:center;" | 1| - | style="text-align:center;" | 1 ! 40½ | - ! 47½|-| style="text-align:right;" | 89 | style="text-align:right;" | 90! A60 | Benoni defence| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=89&season=19 1-0] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=90&season=19 1-0] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 41½ | - ! 48½|-| style="text-align:right;" | 91 | style="text-align:right;" | 92 ! C16 | French| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=91&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=92&season=19 1-0] | style="text-align:center;" | ½ | - | style="text-align:center;" | 1½ ! 42| - ! 50|-| style="text-align:right;" | 93 | style="text-align:right;" | 94 ! A80 | Dutch| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=93&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=94&season=19 1-0] | style="text-align:center;" | ½ | - | style="text-align:center;" | 1½ ! 42½ | - ! 51½|-| style="text-align:right;" | 95 | style="text-align:right;" | 96 ! C27| Vienna| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=95&season=19 ½-½] | style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=96&season=19 ½-½] | style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 43½ | - ! 52½|-| style="text-align:right;" | 97| style="text-align:right;" | 98! E98| King's Indian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=97&season=19 ½-½]| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=98&season=19 ½-½]| style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 44½ | - ! 53½ |-| style="text-align:right;" | 99 | style="text-align:right;" | 100 ! B72| Sicilian| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=99&season=19 ½-½]| style="text-align:center;" | [https://tcec-chess.com/#div=sf&game=100&season=19 ½-½]| style="text-align:center;" | 1 | - | style="text-align:center;" | 1 ! 45½ | - ! 54½ |- |}* [[ECO|Encyclopaedia of Chess Openings (ECO)]]* [https://en.wikipedia.org/wiki/List_of_chess_openings List of chess openings - Wikipedia] =Publications=* [[Guy Haworth]], [[Nelson Hernandez]] ('''2020'''). ''The 19th Top Chess Engine Championship, TCEC19''. [[ICGA Journal#42_4|ICGA Journal, Vol. 42, No. 4]], [https://tcec-chess.com/articles/TCEC_19.pdf pdf]* [[Matthew Sadler]] ('''2020'''). ''The TCEC19 Computer Chess Superfinal: A perspective''. [[ICGA Journal#42_4|ICGA Journal, Vol. 42, No. 4]], [https://tcec-chess.com/articles/Sufi_19_-_Sadler.pdf pdf]