Rank Name Elo + - games score oppo. draws 1 Stockfish 3633 23 23 241 60% 3567 67% 2 StockfishClassical 3619 64 64 28 73% 3475 46% 3 LCZero 3612 19 19 366 57% 3568 67% 4 KomodoDragon 3581 24 24 228 53% 3564 61% 5 Komodo 3544 65 65 28 59% 3486 54% 6 AllieStein 3544 31 31 125 54% 3519 66% 7 Stoofvlees 3532 33 33 155 65% 3388 40% 8 EtherealClassical 3529 65 65 30 57% 3487 53% 9 Igel 3515 35 35 106 56% 3469 61% 10 Stockfish_13_CCRL 3504 34 34 116 69% 3375 63% 11 Ethereal 3497 27 27 173 51% 3492 58% 12 SlowChess 3492 32 32 127 52% 3474 56% 13 LCZeroCPU 3492 66 66 30 50% 3492 47% 14 ScorpioNN 3483 32 32 113 46% 3510 68% 15 RubiChess 3479 35 35 105 53% 3460 58% 16 Stockfish_11_CCRL 3478 30 30 134 57% 3429 68% 17 Pedone 3453 34 34 118 54% 3425 52% 18 Nemorino 3448 27 27 174 54% 3420 59% 19 rofChade 3436 27 27 184 42% 3489 52% 20 Xiphos 3434 33 33 119 46% 3463 58% 21 Minic 3424 29 29 148 57% 3372 63% 22 Komodo_14_CCRL 3422 38 38 88 53% 3398 66% 23 Booot 3417 35 35 112 67% 3300 53% 24 Fritz 3415 42 42 77 49% 3417 49% 25 Winter 3404 43 43 74 47% 3419 57% 26 RubiChessClassical 3399 64 64 30 33% 3505 47% 27 Defenchess 3398 34 34 113 48% 3413 54% 28 Vajolet2 3386 42 42 78 51% 3380 54% 29 Halogen 3384 29 29 154 57% 3338 59% 30 Seer 3367 31 31 136 52% 3349 56% 31 Koivisto 3361 32 32 142 59% 3295 43% 32 ClassicAra 3361 32 32 125 58% 3305 58% 33 Combusken 3356 42 42 74 53% 3331 55% 34 Wasp 3338 36 36 98 46% 3364 59% 35 Komodo_10_CCRL 3334 39 39 87 48% 3353 49% 36 Tucano 3331 37 37 94 53% 3311 52% 37 Weiss 3326 38 38 95 51% 3324 46% 38 Arasan 3325 40 40 82 40% 3390 51% 39 Marvin 3297 41 41 75 41% 3351 60% 40 Monolith 3289 42 42 73 51% 3284 55% 41 Cheng 3276 45 45 64 54% 3248 48% 42 Topple 3262 42 42 74 41% 3324 49% 43 FabChess 3260 54 54 42 48% 3274 48% 44 Amoeba 3254 47 47 60 50% 3250 40% 45 ChessFighter 3252 41 41 78 44% 3295 56% 46 Nirvana 3252 50 50 54 50% 3249 41% 47 Stash 3246 36 36 104 50% 3250 49% 48 Pirarucu 3242 41 41 75 39% 3312 52% 49 Gull_20170410_CCRL 3240 48 48 59 45% 3282 46% 50 Counter 3219 51 51 48 35% 3315 50% 51 Mr_Bob 3215 40 40 81 41% 3273 53% 52 Berserk 3213 53 53 44 49% 3222 48% 53 A0lite 3209 62 62 31 42% 3265 52% 54 Invictus 3208 54 54 48 47% 3228 35% 55 Drofa 3187 46 46 64 41% 3254 44% 56 SimpleEval 3084 42 42 108 20% 3319 21% 57 Bagatur 3083 43 43 79 27% 3239 38% 58 Crafty_25.2_CCRL 3059 68 68 32 27% 3218 22% 59 tomitankChess 3036 64 64 40 24% 3225 23% 60 Cheese 3035 49 49 68 24% 3231 24% 61 Francesca 2985 71 71 39 17% 3239 23% 62 Glaurung_2.2_CCRL 2971 65 65 61 11% 3308 16% Note that all CCRL engines use 4 threads and 1GiB hash. Other engines usually use 176 threads and 64GiB hash. bayeselo input: readpgn players/TCEC_Season_20.pgn readpgn players/TCEC_Season_21.pgn elo advantage 38.961 drawelo 300.45 mm offset 3478 Stockfish_11_CCRL ratings