Release Monthly Release - 2026.02 · computer-chess-index/cci

Monthly Release Summary - 2026.02

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}
_RuthIron	_21.9.6.7	_2026-02-28	_{Emre Kalkan}	_✅	_✅	_✅	2410 _{(new) 🟩}	2745 _{(new) 🟩}	2853 _{(new) 🟩}
_Grail	_1.1.0	_2026-02-28	_{Jorgen Hanssen}	_✅	_✅	_✅	2807 _{(+354) 🟩}	3081 _{(+362) 🟩}	3178 _{(+321) 🟩}
_Alexandria	_9.0	_2026-02-27	_PGG106	_✅	_✅	_✅	3432 _{(+3) 🟩}	3548 _{(+2) 🟩}	3579 _{(-3) 🟩}
_Zangdar	_6.1.1	_2026-02-25	_Carbecq	_✅	_✅	_✅	3204 _{(+57) 🟩}	3379 _{(+5) 🟩}	3403 _{(-31) 🟩}
_ShallowGuess	_1.0.0	_2026-02-24	_{Zixiao Han}	_✅	_✅	_✅	2329 _{(new) 🟩}	2660 _{(new) 🟩}	2743 _{(new) 🟩}
_Prune	_3.2.1	_2026-02-24	_{Thomas Girolami}	_✅	_✅	_✅	3096 _{(+188) 🟩}	3325 _{(+162) 🟩}	3384 _{(+175) 🟩}
_Malika	_0.892	_2026-02-23	_{Fauzi Dabat Akram}	_✅	_✅	_✅	2668 _{(-43) 🟩}	2889 _{(-103) 🟩}	2897 _{(-205) 🟩}
_RuthIron	_21.9.5.2	_2026-02-22	_{Emre Kalkan}	_✅	_✅	_❓
_Roc	_1.10	_2026-02-21	_{Tom Hyer}	_✅	_✅	_✅	2738 _{(new) 🟩}	2958 _{(new) 🟩}	3028 _{(new) 🟩}
_Abhinengine	_1.0	_2026-02-21	_{Abhineet Kulkarni}	_✅	_✅	_✅	1021 _{(new) 🟥}	1372 _{(new) 🟥}	1366 _{(new) 🟥}
_Ratsu	_1.0.0	_2026-02-20	_{Eetu Rantala}	_✅	_✅	_✅	1648 _{(+102) 🟩}	1882 _{(+76) 🟩}	1952 _{(+88) 🟩}
_FrankyCPP	_1.3.0	_2026-02-20	_{Frank Kopp}	_✅	_✅	_❓
_Sykora	_0.1.0	_2026-02-17	_{Sullivan Bognar}	_✅	_✅	_✅	1889 _{(new) 🟥}	2228 _{(new) 🟨}	2419 _{(new) 🟥}
_Anodos	_1.3.0	_2026-02-16	_{Tom Cant}	_✅	_✅	_✅	2157 _{(+162) 🟩}	2425 _{(+118) 🟩}	2492 _{(+104) 🟩}
_Chessnix	_1.3	_2026-02-15	_{Langedijk Eric}	_✅	_✅	_✅	2862 _{(+254) 🟥}	3066 _{(+293) 🟨}	3166 _{(+227) 🟥}
_Tcheran	_11.0	_2026-02-13	_{Jonathan Gilchrist}	_✅	_✅	_✅	3241 _{(+101) 🟩}	3420 _{(+94) 🟩}	3445 _{(+58) 🟩}
_Minke	_5.0.0	_2026-02-13	_{Eduardo Marinho}	_✅	_✅	_✅	3133 _{(+62) 🟩}	3318 _{(+43) 🟩}	3387 _{(+89) 🟩}
_Raphael	_3.0.0	_2026-02-12	_{Rei Meguro}	_✅	_✅	_✅	2804 _{(+239) 🟩}	3033 _{(+125) 🟩}	3105 _{(+150) 🟩}
_Halogen	_16.0.0	_2026-02-10	_{Kieren Pearson}	_✅	_✅	_✅	3363 _{(+74) 🟩}	3526 _{(+52) 🟩}	3552 _{(+23) 🟩}
_Petrel	_3.3.1	_2026-02-10	_{Aleks Peshkov}	_✅	_✅	_✅	2923 _{(-25) 🟩}	3141 _{(-30) 🟩}	3174 _{(-17) 🟩}
_RustyRival	_1.0.29	_2026-02-10	_{Chris Moreton}	_✅	_✅	_✅	1906 _{(-12) 🟥}	2160 _{(-53) 🟨}	2268 _{(+28) 🟨}
_Zangdar	_6.1	_2026-02-10	_Carbecq	_✅	_✅	_✅	3147 _{(0) 🟩}	3374 _{(+18) 🟩}	3434 _{(+25) 🟩}
_Zeppelin	_1.2.0	_2026-02-09	_{Jakub Szczerbinski}	_✅	_✅	_✅	1565 _{(+65) 🟩}	1786 _{(+100) 🟩}	1933 _{(+119) 🟩}
_Petrel	_3.3	_2026-02-09	_{Aleks Peshkov}	_✅	_✅	_✅	2948 _{(+31) 🟥}	3171 _{(+58) 🟥}	3191 _{(+24) 🟥}
_Gnome	_2026.02.08	_2026-02-08	_{Thibor Raven}	_✅	_✅	_✅	1366 _{(new) 🟩}	1559 _{(new) 🟩}	1578 _{(new) 🟩}
_Tarnished	_5.0	_2026-02-07	_{Anik Patel}	_✅	_✅	_✅	3366 _{(+111) 🟩}	3529 _{(+95) 🟩}	3553 _{(+71) 🟩}
_Malika	_0.418	_2026-02-07	_{Fauzi Dabat Akram}	_✅	_✅	_✅	2711 _{(new) 🟩}	2992 _{(new) 🟩}	3102 _{(new) 🟩}
_Odonata	_1.1.0	_2026-02-07	_{Andy Watkins}	_✅	_✅	_✅	2832 _{(new) 🟨}	3152 _{(new) 🟨}	3194 _{(new) 🟨}
_Zangdar	₆	_2026-02-07	_Carbecq	_✅	_✅	_✅	3147 _{(+12) 🟩}	3356 _{(+5) 🟩}	3409 _{(+15) 🟩}
_SoloEngine	_1.4.0	_2026-02-07	_{Yunus Emre Yıldız}	_✅	_✅	_✅	1773 _{(+134) 🟩}	2087 _{(+104) 🟩}	2206 _{(+127) 🟩}
_Kreveta	_2.2.3	_2026-02-05	_{Daniel Michna}	_✅	_✅	_✅	1814 _{(+35) 🟩}	2115 _{(+45) 🟩}	2209 _{(-8) 🟩}
_Gecko	_0.08	_2026-02-05	_{Bingwen Yang}	_✅	_✅	_✅	1878 _{(new) 🟩}	2066 _{(new) 🟩}	2155 _{(new) 🟩}
_Shakeybot	_1.0.0	_2026-02-05	_{Daniel Collins}	_✅	_✅	_❓
_Sturddle2	_2.5.0	_2026-02-04	_{Cristian Vlasceanu}	_✅	_✅	_✅	2697 _{(+77) 🟩}	3024 _{(+19) 🟩}	3164 _{(+72) 🟩}
_Plisco	_1.0.3	_2026-02-04	_{Guido Flohr}	_✅	_✅	_❓
_Zeppelin	_1.1.0	_2026-02-03	_{Jakub Szczerbinski}	_✅	_✅	_✅	1500 _{(+324) 🟩}	1686 _{(+116) 🟩}	1814 _{(+186) 🟩}
_Bagatur	_5.4	_2026-02-02	_{Krasimir Topchiyski}	_✅	_✅	_❓
_Zeppelin	_1.0.0	_2026-02-01	_{Jakub Szczerbinski}	_✅	_✅	_✅	1176 _{(-31) 🟨}	1570 _{(+148) 🟩}	1628 _{(+111) 🟩}
_Anodos	_1.2.0	_2026-02-01	_{Tom Cant}	_✅	_✅	_✅	1995 _{(+193) 🟩}	2307 _{(+277) 🟩}	2388 _{(+235) 🟩}
_PZChessBot	_6.1	_2026-02-01	_{Kevin Lu}	_✅	_✅	_✅	3201 _{(+33) 🟩}	3424 _{(+62) 🟩}	3479 _{(+55) 🟩}
_SoloEngine	_1.3.1	_2026-02-01	_{Yunus Emre Yıldız}	_✅	_✅	_✅	1639 _{(-24) 🟩}	1983 _{(+17) 🟩}	2079 _{(+51) 🟩}

🟥 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:}
_Gaia	_4.1.2	_2026-02-24	_{Jean-Francois Romang, David Rabel}	_✅	_❓	_❓
_Gaia	_4.1.1	_2026-02-24	_{Jean-Francois Romang, David Rabel}	_✅	_❓	_❓
_Prune	_3.2.0	_2026-02-22	_{Thomas Girolami}	_✅	_❓	_❓
_Gaia	_4.1.0	_2026-02-22	_{Jean-Francois Romang, David Rabel}	_✅	_❓	_❓
_Theoria	_0.2	_2026-02-21		_✅	_✅	_✅	3249 _{(-183) 🟩}	3286 _{(-277) 🟩}	3267 _{(-311) 🟩}
_FrankyCPP	_1.2.0	_2026-02-14	_{Frank Kopp}	_✅	_❓	_❓
_FrankyCPP	_1.1	_2026-02-07	_{Frank Kopp}	_✅	_❓	_❓
_{could not be initialized:}
_{missing Virustotal clearance:}
_Gaia	_4.1.3	_2026-02-26	_{Jean-Francois Romang, David Rabel}	_✅	_❌	_❓
_{Vietnamesecoffee}	_1.0.8	_2026-02-11	_{William Nguyen}	_✅	_❌	_❓
_{missing Binaries:}
_ChessMatrix	_1.1.1	_2026-02-27	_{Kristian Ekman}	_❌	_❓	_❓
_Chessnix	_0.0	_2026-02-25	_{Langedijk Eric}	_❌	_❓	_❓
_Kociolek	_2.0	_2026-02-25	_Kociolek	_❌	_❓	_❓
_Lozza	₆	_2026-02-13	_{Colin Jenkins}	_❌	_❓	_❓
_Lozza	₂	_2026-02-13	_{Colin Jenkins}	_❌	_❓	_❓
_Petrel	_2.3.1	_2026-02-10	_{Aleks Peshkov}	_❌	_❓	_❓
_RustyRival	_1.0.28	_2026-02-10	_{Chris Moreton}	_❌	_❓	_❓
_{Vietnamesecoffee}	_1.0.7	_2026-02-10	_{William Nguyen}	_❌	_❓	_❓
_{Vietnamesecoffee}	_1.0.6	_2026-02-10	_{William Nguyen}	_❌	_❓	_❓
_{Vietnamesecoffee}	_1.0.5	_2026-02-10	_{William Nguyen}	_❌	_❓	_❓
_{Vietnamesecoffee}	_1.0.4	_2026-02-10	_{William Nguyen}	_❌	_❓	_❓
_{Vietnamesecoffee}	_1.0.3	_2026-02-09	_{William Nguyen}	_❌	_❓	_❓
_{Vietnamesecoffee}	_1.0.2	_2026-02-09	_{William Nguyen}	_❌	_❓	_❓
_{Vietnamesecoffee}	_1.0.1	_2026-02-09	_{William Nguyen}	_❌	_❓	_❓
_{Vietnamesecoffee}	_1.0.0	_2026-02-09	_{William Nguyen}	_❌	_❓	_❓
_Petrel	_2.3	_2026-02-09	_{Aleks Peshkov}	_❌	_❓	_❓
_RustyRival	_1.0.27	_2026-02-09	_{Chris Moreton}	_❌	_❓	_❓
_{HumanChessEngine}	_0.1.0	_2026-02-06	_{Brendan and Jay}	_❌	_❓	_❓
_Oops!Mate	_16.0	_2026-02-06	_{Swoyam Pokharel}	_❌	_❓	_❓
_Oops!Mate	_15.0	_2026-02-06	_{Swoyam Pokharel}	_❌	_❓	_❓
_Oops!Mate	_14.0	_2026-02-06	_{Swoyam Pokharel}	_❌	_❓	_❓
_Oops!Mate	_13.0	_2026-02-05	_{Swoyam Pokharel}	_❌	_❓	_❓
_Oops!Mate	_12.0	_2026-02-05	_{Swoyam Pokharel}	_❌	_❓	_❓
_Oops!Mate	_11.0	_2026-02-04	_{Swoyam Pokharel}	_❌	_❓	_❓
_Oops!Mate	_10.0	_2026-02-03	_{Swoyam Pokharel}	_❌	_❓	_❓
_Oops!Mate	_9.0	_2026-02-03	_{Swoyam Pokharel}	_❌	_❓	_❓
_Oops!Mate	_8.0	_2026-02-02	_{Swoyam Pokharel}	_❌	_❓	_❓
_Oops!Mate	_7.0	_2026-02-02	_{Swoyam Pokharel}	_❌	_❓	_❓
_Oops!Mate	_6.0	_2026-02-02	_{Swoyam Pokharel}	_❌	_❓	_❓
_RustyRival	_1.0.26	_2026-02-01	_{Chris Moreton}	_❌	_❓	_❓
_RustyRival	_1.0.25	_2026-02-01	_{Chris Moreton}	_❌	_❓	_❓

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