Release Monthly Release - 2026.01 · computer-chess-index/cci

Monthly Release Summary - 2026.01

Engine	Version	Published	Author	Bin	VT	Init	cElo _{(∆ prev) STC _8.0+0.08s}	cElo _{(∆ prev) LTC _60.0+0.60s}	cElo _{(∆ prev) VLTC _2m24s+1.12s}
_Stockfish	_18.0	_2026-01-31	_{Stockfish Authors}	_✅	_✅	_✅	3510 _{(+24) 🟩}	3594 _{(+6) 🟩}	3614 _{(+7) 🟩}
_RustyRival	_1.0.24	_2026-01-30	_{Chris Moreton}	_✅	_✅	_✅	1918 _{(+37) 🟥}	2213 _{(+160) 🟨}	2240 _{(+69) 🟨}
_Oops!Mate	_2.0	_2026-01-30	_{Swoyam Pokharel}	_✅	_✅	_✅	1280 _{(+143) 🟩}	1455 _{(+93) 🟩}	1482 _{(+69) 🟩}
_Eubos	_4.3	_2026-01-29	_{Chris Bolt}	_✅	_✅	_✅	2101 _{(-59) 🟩}	2453 _{(+32) 🟩}	2569 _{(+23) 🟩}
_Raphael	_2.3.0	_2026-01-26	_{Rei Meguro}	_✅	_✅	_✅	2565 _{(+51) 🟩}	2908 _{(+134) 🟩}	2955 _{(+82) 🟩}
_Laura	_1.1.0	_2026-01-26	_{Hans Tibberio}	_✅	_✅	_✅	1297 _{(new) 🟨}	1477 _{(new) 🟨}	1408 _{(new) 🟨}
_Aconcagua	_5.0.0	_2026-01-25	_{Tarifa Gabriel}	_✅	_✅	_✅	2160 _{(+200) 🟩}	2448 _{(+188) 🟩}	2452 _{(+88) 🟩}
_Gyatso	_1.2.0	_2026-01-24	_{Gyatso Neesham}	_✅	_✅	_✅	2126 _{(+164) 🟩}	2435 _{(+121) 🟩}	2520 _{(+117) 🟩}
_SoloEngine	_1.2.2	_2026-01-23	_{Yunus Emre Yıldız}	_✅	_✅	_✅	1663 _{(new) 🟩}	1966 _{(new) 🟩}	2028 _{(new) 🟩}
_Yakka	_1.5	_2026-01-22	_{Christopher Crone}	_✅	_✅	_✅	2762 _{(+111) 🟩}	3021 _{(+102) 🟩}	3109 _{(+150) 🟩}
_Ratsu	_0.9.0	_2026-01-21	_{Eetu Rantala}	_✅	_✅	_✅	1546 _{(new) 🟩}	1806 _{(new) 🟩}	1864 _{(new) 🟩}
_RustyRival	_1.0.23	_2026-01-19	_{Chris Moreton}	_✅	_✅	_✅	1881 _{(new) 🟥}	2053 _{(-21) 🟨}	2171 _{(+16) 🟨}
_Fktb	_0.0.77	_2026-01-18	_{Landon Peng}	_✅	_✅	_✅	1856 _{(-58) 🟩}	2140 _{(+3) 🟩}	2233 _{(+20) 🟩}
_TDFA	_2.0	_2026-01-17	_{Malik Tremain}	_✅	_✅	_❓
_Lozza	₁₀	_2026-01-17	_{Colin Jenkins}	_✅	_✅	_✅	2846 _{(+236) 🟩}	3082 _{(+179) 🟩}	3123 _{(+123) 🟩}
_Chess3	_3.0	_2026-01-17	_{Paul Sonkoly}	_✅	_✅	_✅	2469 _{(new) 🟩}	2755 _{(new) 🟩}	2800 _{(new) 🟩}
_Radiance	_4.2	_2026-01-17	_{Paul-Elie Pipelin}	_✅	_✅	_✅	1585 _{(new) 🟩}	1850 _{(new) 🟩}	1895 _{(new) 🟩}
_Annie	_1.2	_2026-01-17	_{Jost Triller}	_✅	_✅	_✅	1322 _{(new) 🟩}	1513 _{(new) 🟩}	1534 _{(new) 🟩}
_Anodos	_1.1.0	_2026-01-16	_{Tom Cant}	_✅	_✅	_✅	1802 _{(+54) 🟩}	2030 _{(+63) 🟩}	2153 _{(+127) 🟩}
_RuthIron	_18.9	_2026-01-16	_{Emre Kalkan}	_✅	_✅	_❓
_Grail	_1.0.4	_2026-01-16	_{Jorgen Hanssen}	_✅	_✅	_✅	2453 _{(+128) 🟩}	2719 _{(+38) 🟩}	2857 _{(+102) 🟩}
_Pawnocchio	_1.9.2	_2026-01-15	_{Jonathan Hallström}	_✅	_✅	_✅	3376 _{(+9) 🟩}	3541 _{(+7) 🟩}	3552 _{(+10) 🟩}
_Kreveta	_2.2.2	_2026-01-13	_{Daniel Michna}	_✅	_✅	_✅	1779 _{(+172) 🟩}	2070 _{(+84) 🟩}	2217 _{(+124) 🟩}
_Pawnocchio	_1.9.1	_2026-01-12	_{Jonathan Hallström}	_✅	_✅	_✅	3367 _{(-11) 🟩}	3534 _{(+17) 🟩}	3542 _{(-11) 🟩}
_RivalChess	_40.0.0	_2026-01-11	_{Chris Moreton}	_✅	_✅	_❓
_RukChess	_4.2.0	_2026-01-11	_{Ilya Rukavishnikov}	_✅	_✅	_✅	2816 _{(new) 🟩}	3127 _{(new) 🟩}	3194 _{(new) 🟩}
_Lozza	₉	_2026-01-10	_{Colin Jenkins}	_✅	_✅	_✅	2610 _{(+17) 🟨}	2903 _{(-14) 🟩}	3000 _{(-33) 🟩}
_RustyRival	_1.0.13	_2026-01-10	_{Chris Moreton}	_✅	_✅	_✅	1774 _{(new) 🟥}	2041 _{(new) 🟥}	2230 _{(new) 🟥}
_Prune	_3.1.0	_2026-01-10	_{Thomas Girolami}	_✅	_✅	_✅	2908 _{(+267) 🟩}	3163 _{(+266) 🟩}	3209 _{(+201) 🟩}
_Zugblitz	_1.3.1	_2026-01-10		_✅	_✅	_✅	1859 _{(new) 🟩}	2145 _{(new) 🟩}	2186 _{(new) 🟩}
_Gyatso	_1.1.0	_2026-01-09	_{Gyatso Neesham}	_✅	_✅	_✅	1962 _{(new) 🟨}	2314 _{(new) 🟩}	2403 _{(new) 🟩}
_Raphael	_2.2.0	_2026-01-08	_{Rei Meguro}	_✅	_✅	_✅	2514 _{(+210) 🟩}	2774 _{(+279) 🟩}	2873 _{(+266) 🟩}
_{ChessSystemTal}	_Extreme	_2026-01-07	_{Chris Wittington}	_✅	_✅	_✅	2925 _{(new) 🟩}	3168 _{(new) 🟩}	3228 _{(new) 🟩}
_Viridithas	_19.0.1	_2026-01-06	_{Cosmo Bobak}	_✅	_✅	_✅	3406 _{(-3) 🟩}	3530 _{(-7) 🟩}	3556 _{(-19) 🟩}
_Plisco	_1.0.2	_2026-01-06	_{Guido Flohr}	_✅	_✅	_❓	1017 _{(-455) 🟥}
_Leorik	_3.2	_2026-01-06	_{Thomas Jahn}	_✅	_✅	_✅	392 _{(new) 🟩}	389 _{(new) 🟩}	427 _{(new) 🟩}
_C4ke	_3.0	_2026-01-05		_✅	_✅	_✅	2746 _{(new) 🟩}	3092 _{(new) 🟩}	3143 _{(new) 🟩}
_Clue	_0.0.4	_2026-01-05	_{Jean-Marc Astesana}	_✅	_✅	_✅	1555 _{(new) 🟥}	1790 _{(new) 🟥}	1862 _{(new) 🟥}
_Fktb	_0.0.76	_2026-01-05	_{Landon Peng}	_✅	_✅	_✅	1914 _{(new) 🟨}	2137 _{(new) 🟩}	2213 _{(new) 🟨}
_Viridithas	_19.0.0	_2026-01-04	_{Cosmo Bobak}	_✅	_✅	_✅	3409 _{(+19) 🟨}	3537 _{(+22) 🟩}	3575 _{(+39) 🟨}
_Grail	_1.0.3	_2026-01-04	_{Jorgen Hanssen}	_✅	_✅	_✅	2325 _{(+26) 🟩}	2681 _{(+115) 🟩}	2755 _{(+74) 🟩}
_Pawnocchio	_1.9	_2026-01-03	_{Jonathan Hallström}	_✅	_✅	_✅	3378 _{(new) 🟩}	3517 _{(new) 🟩}	3553 _{(new) 🟩}
_Amira	_1.82	_2026-01-02	_{Fauzi Dabat Akram}	_✅	_✅	_✅	2302 _{(+115) 🟩}	2542 _{(+113) 🟩}	2623 _{(+154) 🟩}
_Anodos	_1.0.0	_2026-01-02	_{Tom Cant}	_✅	_✅	_✅	1748 _{(new) 🟩}	1967 _{(new) 🟩}	2026 _{(new) 🟩}
_Revolver	_1.0	_2026-01-01	_{Deshawn Mohan-Smith}	_✅	_✅	_✅	2259 _{(new) 🟩}	2502 _{(new) 🟩}	2562 _{(new) 🟩}
_Raphael	_2.1.0	_2026-01-01	_{Rei Meguro}	_✅	_✅	_✅	2304 _{(+183) 🟨}	2495 _{(+139) 🟩}	2607 _{(+274) 🟨}
_PZChessBot	_6.0	_2026-01-01	_{Kevin Lu}	_✅	_✅	_✅	3168 _{(+121) 🟩}	3362 _{(+123) 🟩}	3424 _{(+154) 🟩}

🟥 This time control has been tested with less than 50 games, expect considerable changes still.
🟨 This time control has been tested with less than 150 games, expect smaller changes still.
🟩 This time control has been tested with 150 or more games, only minor changes expected.

See version detail page for concrete numbers of games and more.

Complete Lists:
Ratings: Complete list, grouped per release
Ratings: Complete list, each Timecontrol

Test Conditions:

GUI/CLI: Cute-Chess
Elo Calculation: Bayesian-Elo
CPU: Intel(R) Core(TM) i5-7500T 2.70GHz
Opening book: 8_moves_v3
ponder is off
hash size is engine default
STC: 8.0+0.08s, LTC: 60.0+0.60s, VLTC: 2m24s+1.12s

These engines are not included in the main table above.

Engine	Version	Published	Author	Bin	VT	Init	cElo _{(∆ prev) STC _8.0+0.08s}	cElo _{(∆ prev) LTC _60.0+0.60s}	cElo _{(∆ prev) VLTC _2m24s+1.12s}
_{Newer version this month:}
_Theoria	_0.1	_2026-01-27		_✅	_✅	_✅	3432 _{(new) 🟩}	3563 _{(new) 🟩}	3578 _{(new) 🟩}
_RustyRival	_1.0.19	_2026-01-12	_{Chris Moreton}	_✅	_❓	_❓		2074 _{(new) 🟨}	2155 _{(-163) 🟥}
_RustyRival	_1.0.17	_2026-01-11	_{Chris Moreton}	_✅	_✅	_❓	1871 _{(new) 🟥}		2318 _{(+49) 🟥}
_RustyRival	_1.0.15	_2026-01-11	_{Chris Moreton}	_✅	_❓	_❓		2095 _{(+54) 🟥}	2269 _{(+39) 🟨}
_RustyRival	_1.0.9	_2026-01-01	_{Chris Moreton}	_✅	_❓	_❓		1962 _{(new) 🟥}
_{could not be initialized:}
_{missing Virustotal clearance:}
_Priessnitz	_2.0.1	_2026-01-21	_{Kevin Feske}	_✅	_❌	_❓
_Porcupine	_1.0.0	_2026-01-07		_✅	_❌	_❓
_{missing Binaries:}
_FrankyCPP	_1.0.0	_2026-01-31	_{Frank Kopp}	_❌	_❓	_❓
_Oops!Mate	_5.0	_2026-01-31	_{Swoyam Pokharel}	_❌	_❓	_❓
_Oops!Mate	_4.0	_2026-01-31	_{Swoyam Pokharel}	_❌	_❓	_❓
_Oops!Mate	_3.0	_2026-01-31	_{Swoyam Pokharel}	_❌	_❓	_❓
_Luminex	_3.13.0	_2026-01-31	_{Cheng Chang}	_❌	_❓	_❓
_Luminex	_3.12.0	_2026-01-31	_{Cheng Chang}	_❌	_❓	_❓
_Luminex	_3.11.0	_2026-01-30	_{Cheng Chang}	_❌	_❓	_❓
_Oops!Mate	_1.0	_2026-01-30	_{Swoyam Pokharel}	_❌	_❓	_❓
_RustyRival	_1.0.21	_2026-01-19	_{Chris Moreton}	_❌	_❓	_❓
_RustyRival	_1.0.20	_2026-01-17	_{Chris Moreton}	_❌	_❓	_❓
_RuthIron	_18.8	_2026-01-15	_{Emre Kalkan}	_❌	_❓	_❓
_RustyRival	_1.0.18	_2026-01-12	_{Chris Moreton}	_❌	_❓	_❓
_RivalChess	_37.0.0	_2026-01-11	_{Chris Moreton}	_❌	_❓	_❓
_RustyRival	_1.0.12	_2026-01-10	_{Chris Moreton}	_❌	_❓	_❓
_RustyRival	_1.0.11	_2026-01-10	_{Chris Moreton}	_❌	_❓	_❓
_c4e5Chess	_0.3.2	_2026-01-10		_❌	_❓	_❓
_RustyRival	_1.0.10	_2026-01-09	_{Chris Moreton}	_❌	_❓	_❓
_Zeno	_1.0	_2026-01-05	_{Oswald Nounagnon}	_❌	_❓	_❓
_RustyRival	_1.0.8	_2026-01-01	_{Chris Moreton}	_❌	_❓	_❓

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