Release Monthly Release - 2026.04 · computer-chess-index/cci

Monthly Release Summary - 2026.04

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}
_Laura	_3.0.0	_2026-04-29	_{Hans Tibberio}	_✅	_✅	_✅	1570 _{(+213) 🟨}	1697 _{(+32) 🟨}	1812 _{(+123) 🟩}
_Whitespine	_1.4.0	_2026-04-29	_{Miloslav Macůrek}	_✅	_✅	_✅	722 _{(-137) 🟩}	934 _{(-87) 🟩}	1046 _{(+20) 🟩}
_Beast	_3.3.3	_2026-04-29	_{Miloslav Macůrek}	_✅	_✅	_✅	651 _{(new) 🟩}	844 _{(new) 🟩}	956 _{(new) 🟩}
_Rudim	_1.5	_2026-04-28	_{Vishnu Bhagyanath}	_✅	_✅	_✅	1597 _{(new) 🟩}	1847 _{(new) 🟩}	1962 _{(new) 🟩}
_Chessnix	_1.4	_2026-04-28	_{Langedijk Eric}	_✅	_✅	_✅	2877 _{(+15) 🟩}	3140 _{(+74) 🟩}	3232 _{(+66) 🟩}
_Cataphract	_1.4	_2026-04-27		_✅	_✅	_❓
_Viking	_R5	_2026-04-27	_{Dario Pendic}	_✅	_✅	_✅	1917 _{(+568) 🟩}	2180 _{(+349) 🟩}	2344 _{(+226) 🟩}
_Raphael	_4.0.0	_2026-04-26	_{Rei Meguro}	_✅	_✅	_✅	3357 _{(+32) 🟩}	3483 _{(+12) 🟩}	3521 _{(+11) 🟩}
_Icarus	_1.0	_2026-04-26		_✅	_✅	_✅	3316 _{(new) 🟩}	3459 _{(new) 🟩}	3505 _{(new) 🟩}
_Chal	_1.4.1	_2026-04-26	_{Naman Thanki}	_✅	_✅	_✅	2282 _{(+21) 🟩}	2561 _{(+69) 🟩}	2649 _{(+65) 🟩}
_RustyRival	_1.0.43	_2026-04-26	_{Chris Moreton}	_✅	_✅	_✅	2376 _{(+292) 🟩}	2692 _{(+369) 🟩}	2817 _{(+403) 🟩}
_Pea	_7.0	_2026-04-25	_{Warre Gevers}	_✅	_✅	_✅	2344 _{(+33) 🟩}	2691 _{(+67) 🟩}	2812 _{(+39) 🟩}
_Minke	_6.0.0	_2026-04-25	_{Eduardo Marinho}	_✅	_✅	_✅	3156 _{(+23) 🟩}	3370 _{(+52) 🟩}	3425 _{(+38) 🟩}
_Facon	_1.4	_2026-04-25	_{Carlos M. Canavessi}	_✅	_✅	_✅	2003 _{(+488) 🟩}	2291 _{(+435) 🟩}	2350 _{(+379) 🟩}
_Soomi	_1.2.0B	_2026-04-24	_{Otto Laukkanen}	_✅	_✅	_✅	2036 _{(+6) 🟩}	2240 _{(-77) 🟩}	2379 _{(-50) 🟩}
_Radiance	_4.4	_2026-04-23	_{Paul-Elie Pipelin}	_✅	_✅	_✅	1706 _{(+32) 🟩}	2067 _{(+114) 🟩}	2203 _{(+105) 🟩}
_Catalyst	_3.0.0	_2026-04-23	_{Anany Tanwar}	_✅	_✅	_✅	2661 _{(+85) 🟨}	3081 _{(+129) 🟩}	3133 _{(+79) 🟩}
_Tofiks	_1.5.0	_2026-04-23	_{Arturs Priede}	_✅	_✅	_✅	2190 _{(+145) 🟩}	2433 _{(+112) 🟩}	2476 _{(+78) 🟩}
_Laura	_2.0.0	_2026-04-23	_{Hans Tibberio}	_✅	_✅	_✅	1357 _{(+60) 🟨}	1665 _{(+188) 🟨}	1689 _{(+281) 🟨}
_Myrddin	_0.95	_2026-04-23	_{John Merlino}	_✅	_✅	_✅	2628 _{(+33) 🟩}	2943 _{(+13) 🟩}	3023 _{(-35) 🟩}
_Viking	_R4	_2026-04-22	_{Dario Pendic}	_✅	_✅	_✅	1349 _{(new) 🟩}	1831 _{(new) 🟩}	2118 _{(new) 🟩}
_Eleanor	_4.1	_2026-04-21	_{Mark Kasa}	_✅	_✅	_✅	3168 _{(+44) 🟩}	3395 _{(+20) 🟩}	3425 _{(+27) 🟩}
_Ratsu	_1.1.0	_2026-04-21	_{Eetu Rantala}	_✅	_✅	_✅	1728 _{(+80) 🟩}	2009 _{(+127) 🟩}	2094 _{(+142) 🟩}
_Cataphract	_1.3	_2026-04-21		_✅	_✅	_❓
_Kreveta	_2.3.0	_2026-04-20	_{Daniel Michna}	_✅	_✅	_✅	1897 _{(+141) 🟩}	2159 _{(-6) 🟩}	2242 _{(+27) 🟩}
_Pea	_6.0	_2026-04-20	_{Warre Gevers}	_✅	_✅	_✅	2311 _{(+320) 🟩}	2624 _{(+220) 🟩}	2773 _{(+217) 🟩}
_Eleanor	_4.0	_2026-04-18	_{Mark Kasa}	_✅	_✅	_✅	3124 _{(+96) 🟩}	3375 _{(+120) 🟩}	3398 _{(+73) 🟩}
_FoxChess	_1.1	_2026-04-18	_{Nathan Faltermeier}	_✅	_✅	_✅	2398 _{(+80) 🟩}	2709 _{(+178) 🟩}	2777 _{(+128) 🟩}
_Pea	_5.0	_2026-04-15	_{Warre Gevers}	_✅	_✅	_✅	1991 _{(+47) 🟩}	2404 _{(+170) 🟩}	2556 _{(+162) 🟩}
_Arasan	_25.4	_2026-04-15	_{Jon Dart}	_✅	_✅	_✅	3228 _{(-16) 🟩}	3425 _{(-5) 🟩}	3476 _{(+1) 🟩}
_SoloEngine	_2.1.0	_2026-04-14	_{Yunus Emre Yıldız}	_✅	_✅	_❓
_Akerbeltz	_1.1.0	_2026-04-14	_{Julen Aristondo}	_✅	_✅	_✅	1939 _{(+551) 🟩}	2201 _{(+566) 🟩}	2298 _{(+531) 🟩}
_Gilipol	_1.00netbin	_2026-04-13	_{José Carlos Martínez Galán}	_✅	_✅	_✅	2543 _{(+2149) 🟩}	2865 _{(+2410) 🟩}	3005 _{(+2538) 🟩}
_Lolbot	_0.3.1	_2026-04-13	_{Lorentz Vedeler}	_✅	_✅	_✅	2090 _{(+66) 🟩}	2406 _{(+168) 🟩}	2435 _{(+120) 🟩}
_Gilipol	_1.00	_2026-04-12	_{José Carlos Martínez Galán}	_✅	_✅	_✅	394 _{(new) 🟨}	455 _{(new) 🟨}	467 _{(new) 🟩}
_Gecko	_0.25.1	_2026-04-12	_{Bingwen Yang}	_✅	_✅	_✅	2483 _{(+88) 🟩}	2755 _{(+95) 🟩}	2835 _{(+117) 🟩}
_Facon	_1.3	_2026-04-11	_{Carlos M. Canavessi}	_✅	_✅	_✅	1515 _{(new) 🟩}	1856 _{(new) 🟩}	1971 _{(new) 🟩}
_Pea	_4.0	_2026-04-11	_{Warre Gevers}	_✅	_✅	_✅	1944 _{(+223) 🟩}	2234 _{(+166) 🟩}	2394 _{(+177) 🟩}
_Tofiks	_1.4.1	_2026-04-11	_{Arturs Priede}	_✅	_✅	_✅	2045 _{(-39) 🟩}	2321 _{(+29) 🟩}	2398 _{(+15) 🟩}
_Lux	_5.0	_2026-04-10	_{Sidhant Roymoulik}	_✅	_✅	_✅	2352 _{(new) 🟩}	2631 _{(new) 🟩}	2691 _{(new) 🟩}
_Pea	_3.0	_2026-04-09	_{Warre Gevers}	_✅	_✅	_✅	1721 _{(+590) 🟩}	2068 _{(+722) 🟩}	2217 _{(+647) 🟩}
_Tofiks	_1.4.0	_2026-04-09	_{Arturs Priede}	_✅	_✅	_✅	2084 _{(new) 🟩}	2292 _{(new) 🟩}	2383 _{(new) 🟩}
_Pea	_2.0	_2026-04-08	_{Warre Gevers}	_✅	_✅	_✅	1131 _{(+397) 🟩}	1346 _{(+535) 🟩}	1570 _{(+657) 🟩}
_Tunguska	_2.1	_2026-04-08	_{Fernando Tenorio}	_✅	_✅	_✅	2812 _{(+308) 🟩}	3146 _{(+297) 🟩}	3210 _{(+282) 🟩}
_Raphael	_3.3.0	_2026-04-06	_{Rei Meguro}	_✅	_✅	_✅	3325 _{(+93) 🟩}	3471 _{(+96) 🟩}	3510 _{(+67) 🟩}
_Pea	_1.0	_2026-04-06	_{Warre Gevers}	_✅	_✅	_✅	734 _{(new) 🟨}	811 _{(new) 🟨}	913 _{(new) 🟨}
_Gecko	_0.25	_2026-04-06	_{Bingwen Yang}	_✅	_✅	_✅	2395 _{(+517) 🟩}	2660 _{(+594) 🟩}	2718 _{(+563) 🟩}
_Cwtch	₅	_2026-04-06	_{Colin Jenkins}	_✅	_✅	_✅	2882 _{(+35) 🟩}	3140 _{(+53) 🟩}	3209 _{(+77) 🟩}
_Caissa	_1.25	_2026-04-05	_{Michał Witanowski}	_✅	_✅	_✅	3382 _{(-8) 🟩}	3533 _{(-5) 🟩}	3561 _{(+6) 🟩}
_Monolith	_3.0	_2026-04-04	_{Jonas Mayr}	_✅	_✅	_✅	2772 _{(new) 🟩}	3032 _{(new) 🟩}	3123 _{(new) 🟩}
_Vajolet2	_3.1	_2026-04-03	_{Marco Belli}	_✅	_✅	_✅	2830 _{(+100) 🟩}	3051 _{(+59) 🟩}	3131 _{(+64) 🟩}
_Catalyst	_2.2.0	_2026-04-03	_{Anany Tanwar}	_✅	_✅	_✅	2576 _{(-17) 🟩}	2952 _{(+31) 🟩}	3054 _{(+137) 🟩}
_Chess3	_4.0	_2026-04-02	_{Paul Sonkoly}	_✅	_✅	_✅	2504 _{(+35) 🟩}	2804 _{(+49) 🟩}	2890 _{(+90) 🟩}
_Catalyst	_2.1.0	_2026-04-02	_{Anany Tanwar}	_✅	_✅	_✅	2593 _{(+5) 🟩}	2921 _{(-29) 🟩}	2917 _{(-68) 🟩}
_Chal	_1.4.0	_2026-04-01	_{Naman Thanki}	_✅	_✅	_✅	2261 _{(+213) 🟩}	2492 _{(+132) 🟩}	2584 _{(+199) 🟩}
_Alexander	_8.3	_2026-04-01	_{Andrea Manzo}	_✅	_✅	_✅	3152 _{(0) 🟩}	3383 _{(+20) 🟩}	3433 _{(+15) 🟩}

🟥 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:}
_Beast	_3.3.2	_2026-04-28	_{Miloslav Macůrek}	_✅	_✅	_❓
_Cepimetheus	_3.2.1	_2026-04-26	_{George Bland}	_✅	_❓	_❓
_Cepimetheus	_3.2.0	_2026-04-26	_{George Bland}	_✅	_❓	_❓
_Cepimetheus	_3.1.0	_2026-04-26	_{George Bland}	_✅	_❓	_❓
_RustyRival	_1.0.42	_2026-04-24	_{Chris Moreton}	_✅	_❓	_❓
_Cepimetheus	_3.0.0	_2026-04-24	_{George Bland}	_✅	_❓	_❓
_Cepimetheus	_2.2.0	_2026-04-23	_{George Bland}	_✅	_❓	_❓
_Viking	_R3	_2026-04-22	_{Dario Pendic}	_✅	_✅	_❓
_Arasan	_25.4	_2026-04-15	_{Jon Dart}	_✅	_✅	_✅	3240 _{(+12) 🟩}	3437 _{(+12) 🟩}	3490 _{(+14) 🟩}
_Cepimetheus	_2.1.0	_2026-04-15	_{George Bland}	_✅	_❓	_❓
_Cepimetheus	_2.0.0	_2026-04-14	_{George Bland}	_✅	_❓	_❓
_Cepimetheus	_1.0.0	_2026-04-07	_{George Bland}	_✅	_❓	_❓
_RustyRival	_1.0.40	_2026-04-02	_{Chris Moreton}	_✅	_✅	_❓
_{could not be initialized:}
_{missing Virustotal clearance:}
_ChessBrainVB	_4.10	_2026-04-29	_{Roger Zuehlsdorf}	_✅	_❌	_❓
_Shellac	₃	_2026-04-11		_✅	_❌	_❓
_{missing Binaries:}
_Capizero	_beta2.5.0	_2026-04-27	_{Hugo Souza}	_❌	_❓	_❓
_Cataphract	_1.4	_2026-04-27		_❌	_❓	_❓
_Xadreco	_9.0	_2026-04-24	_{Ruben Carlo Benante}	_❌	_❓	_❓
_Capizero	_beta2.4.1	_2026-04-24	_{Hugo Souza}	_❌	_❓	_❓
_Cataphract	_1.3	_2026-04-21		_❌	_❓	_❓
_Capizero	_beta2.4.0	_2026-04-17	_{Hugo Souza}	_❌	_❓	_❓
_Capizero	_beta2.3.0	_2026-04-16	_{Hugo Souza}	_❌	_❓	_❓
_Minic	_3.45	_2026-04-16	_{Vivien Clauzon}	_❌	_❓	_❓
_Soul	_0.5.0	_2026-04-16		_❌	_❓	_❓
_Cepimetheus	_1.1.0	_2026-04-13	_{George Bland}	_❌	_❓	_❓
_Luminex	_5.3.0	_2026-04-11	_{Cheng Chang}	_❌	_❓	_❓
_Luminex	_5.2.0	_2026-04-11	_{Cheng Chang}	_❌	_❓	_❓
_Luminex	_5.1.0	_2026-04-10	_{Cheng Chang}	_❌	_❓	_❓
_Luminex	_5.0.0	_2026-04-10	_{Cheng Chang}	_❌	_❓	_❓
_Luminex	_4.5.0	_2026-04-09	_{Cheng Chang}	_❌	_❓	_❓
_Luminex	_4.4.0	_2026-04-08	_{Cheng Chang}	_❌	_❓	_❓
_Soul	_0.4.0	_2026-04-06		_❌	_❓	_❓
_Luminex	_3.26.0	_2026-04-05	_{Cheng Chang}	_❌	_❓	_❓
_Luminex	_3.20.0	_2026-04-04	_{Cheng Chang}	_❌	_❓	_❓
_Luminex	_3.19.0	_2026-04-04	_{Cheng Chang}	_❌	_❓	_❓
_Soul	_0.3.0	_2026-04-01		_❌	_❓	_❓

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