Rank Name Elo + - games score oppo. draws 1 Stockfish 3644 18 18 404 60% 3581 68% 2 LCZero 3620 16 16 529 55% 3586 67% 3 StockfishClassical 3618 64 64 28 73% 3474 46% 4 KomodoDragon 3593 20 20 339 55% 3561 59% 5 Komodo 3543 65 65 28 59% 3485 54% 6 AllieStein 3536 27 27 175 51% 3531 66% 7 Stoofvlees 3534 24 24 257 57% 3462 46% 8 EtherealClassical 3528 65 65 30 57% 3486 53% 9 Stockfish_13_CCRL 3505 33 33 119 68% 3379 64% 10 Igel 3503 29 29 156 50% 3497 58% 11 ScorpioNN 3493 27 27 164 45% 3526 64% 12 SlowChess 3491 32 32 127 52% 3473 56% 13 LCZeroCPU 3491 66 66 30 50% 3491 47% 14 Ethereal 3485 24 24 224 46% 3509 57% 15 Stockfish_11_CCRL 3478 30 30 134 57% 3429 68% 16 RubiChess 3478 35 35 105 53% 3458 58% 17 Pedone 3451 34 34 118 54% 3423 52% 18 Nemorino 3446 27 27 174 54% 3418 59% 19 rofChade 3435 27 27 184 42% 3488 52% 20 Xiphos 3431 33 33 119 46% 3460 58% 21 Minic 3423 29 29 148 57% 3372 63% 22 Komodo_14_CCRL 3421 38 38 88 53% 3397 66% 23 Booot 3416 35 35 112 67% 3300 53% 24 Fritz 3414 42 42 77 49% 3417 49% 25 Winter 3404 43 43 74 47% 3419 57% 26 RubiChessClassical 3398 64 64 30 33% 3503 47% 27 Defenchess 3398 34 34 113 48% 3412 54% 28 Vajolet2 3386 42 42 78 51% 3380 54% 29 Halogen 3383 29 29 154 57% 3337 59% 30 Seer 3366 31 31 136 52% 3348 56% 31 Koivisto 3360 32 32 142 59% 3295 43% 32 ClassicAra 3360 32 32 125 58% 3305 58% 33 Combusken 3355 42 42 74 53% 3329 55% 34 Wasp 3338 36 36 98 46% 3364 59% 35 Komodo_10_CCRL 3333 39 39 87 48% 3352 49% 36 Tucano 3329 37 37 94 53% 3310 52% 37 Weiss 3325 38 38 95 51% 3322 46% 38 Arasan 3325 40 40 82 40% 3390 51% 39 Marvin 3296 41 41 75 41% 3349 60% 40 Monolith 3289 42 42 73 51% 3283 55% 41 Cheng 3275 45 45 64 54% 3248 48% 42 Topple 3261 42 42 74 41% 3323 49% 43 FabChess 3259 54 54 42 48% 3273 48% 44 Amoeba 3254 47 47 60 50% 3250 40% 45 Nirvana 3251 50 50 54 50% 3249 41% 46 ChessFighter 3251 41 41 78 44% 3294 56% 47 Stash 3245 36 36 104 50% 3249 49% 48 Pirarucu 3241 41 41 75 39% 3311 52% 49 Gull_20170410_CCRL 3239 48 48 59 45% 3282 46% 50 Counter 3218 51 51 48 35% 3313 50% 51 Mr_Bob 3215 40 40 81 41% 3273 53% 52 Berserk 3212 53 53 44 49% 3221 48% 53 A0lite 3208 62 62 31 42% 3264 52% 54 Invictus 3207 54 54 48 47% 3227 35% 55 Drofa 3186 46 46 64 41% 3253 44% 56 SimpleEval 3083 42 42 108 20% 3319 21% 57 Bagatur 3082 43 43 79 27% 3238 38% 58 Crafty_25.2_CCRL 3058 68 68 32 27% 3217 22% 59 tomitankChess 3035 64 64 40 24% 3224 23% 60 Cheese 3034 49 49 68 24% 3230 24% 61 Francesca 2984 71 71 39 17% 3238 23% 62 Glaurung_2.2_CCRL 2969 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