Freeware against commercial chess software: Arena 3.5.1 vs Chessbase Fritz 17

September 4, 2022 update:

ProteusSF-Piranha 220904 released! + 10 ELO over 220803.

Download links for FREE ProteusSF-Piranha  for Windows, Mac M1 | Intel And Android

August 3, 2022 update:   

ProteusSF 220803 released! + 10 ELO over 008c with Polyglot books support.

Download links for FREE ProteusSF 220803 for Windows, Mac M1 And Android

July 31, 2022 update:

ProteusSF RBE 008c released! + 10 ELO over 008b with learning and Polyglot books support.

Download links 

June 3, 2022 update:

ProteusSF RBE 008b released! + 10 ELO over 008a with learning and Polyglot books support. 

   PEACE WORLDWIDE! Only fighting sports are allowed!

...And mental challenges like chess are the best

Download links

April 23, 2022 Update:

ProteusSF JBE 007 released! + 10 ELO over v006 with learning, MCTS and Polyglot support.

Download free GPLv3 ProteusSF JBE 007 for Mac M1, for Windows x64 and for Android 

"007 - Never says: blunder again!"  More games you play with it, more strength it get!

Dedicated to Ukrainian people and all humanity that loves PEACE, chess and technology!

ALL 300 PGN GAMES 

OPENINGS BOOK DETAILS 

ALL PGN GAMES (Blitz 3 mins + 2 secs / all on Windows 11 2 Mn/s TCEC21 unbalanced)

ALL PGN GAMES (Blitz 3 mins + 2 secs / all on macOS Silicon M1 6.5 Mn/s)

ALL PGN GAMES (Blitz 3 mins + 2 secs / all on Android Snapdragon 8 CPUs 400 Kn/s)

ALL PGN GAMES (Blitz 30 mins + 5 secs / all on Android Snapdragon 8 CPUs 400 Kn/s)

April 7, 2022 Update: new ProteusChessSFv006 builds + 10 ELO over v005 released!

Download free GPLv3  ProteusChessSFv006 Windows ,  ProteusChessSFv006-Windows-Polyglot.zip 

ProteusChessSFv006 Android , ProteusChessSFv006 Android Polyglot , ProteusChessSFv006 Mac M1 

ProteusChessSFv006-Mac-M1-Polyglot Suggested opening books: DOTS4 (unbalanced) , TCEC 7 & 8moves_v3 (solid)

Good performance against 3 Top Stockfish derivatives

Blitz 3 mins + 2 secs / All CPU Ryzen 9 3900x (18-22 Mn/s) DOTS4 unbalanced PGN opening test suite (each position played on both sides) to avoid draws!

THE BIGGER TEST EVER! 30 mins + 5 secs / all Android TCEC 7 PGN BOOK - Download ALL 612 PGN GAMES

ALL 108 PGN GAMES

Developing my Stockfish 14.1-dev derivative: TalkChess | Engine-chess | BanksiaGUI forums 

BLITZ TOURNAMENT 3+2 ALL TOP ENGINES ON MAC MINI M1

DOWNLOAD ALL PGN GAMES

NOTES:
-Igel 3.0.5 (also if I have added net in config) probably is playing WITHOUT NNUE.
-Ethereal 13.00 github is playing without NNUE due to author's choice, making it commercial and only for Windows AVX2 SSSE3.
-Stockfish and derivatives are still a bit stronger than originals (excepted Dragon) but Koivisto 8.2 and Fire 8.NN.MC.3 aren't still available.
-Sugar 2.4.0 isn't the latest version - I can't find 2.5.0 anymore (project closed by Andrea Manzo)

ProteusChessSFv005 vs CorChess 220316 All PGN GAMES

+4 with the ultra-strong Zeus 24.3 !!!

All Zeus 24.3 games in PGN

+2 even with the ultra-strong AI 24.3 !!!

All Proteus Chess SFv005 vs AI 24.3 PGN games

2 hours + 30 secs / all Download PGN GAMES

Proteus Chess SF v004 has won against Zeus 24.1 !! Thanks Oliprog 

All games in PGN 

DOT4 Tests (200 positions anti-draw)

ALL GAMES ProteusChess SF v004 vs STOCKFISH 120322 - DOT4_3 MIN + 2 SECS

ALL GAMES ProteusChess SF v004 vs BlueMarlin14.8 - DOT4_3 MIN + 2 SECS

Top 13 LT tournament, Group B & C gauntlets completed. Switching to SF dev & ProteusChessSF versus original engines long time gauntlets! Less games at long time control 2 hours + 30 secs / ALL  on a middle range hardware give a more meaningful performance bench than 300 blitz games 3 mins + 2 secs / ALL on a TOP PC. Since some strong original engines crash on Chess for Android (Koivisto 7.18, Seer 2.4.0)  I will play next 10 long time games gauntlet on Windows 11 ARM64  that's is 4 times faster instead of Android Snapdragon 660.

Proteus Chess SF v004 vs Koivisto 7.18 all PGN games

Proteus Chess SF v004 vs Fire 8.NN.MC.3 all PGN games

Proteus Chess SF v004 vs RubiChess 20220223 all PGN games

Proteus Chess SF v004 vs Berserk 8.5.1 all PGN games

ProteusChessSF v004 is a qualified sparring partners for SF & derivatives vs original engines gauntlets!!!!

Blitz 3 mins + 1 sec / all on Android Snapdragon 870 8 threads - 2 Mn/s

All ProteusChess SF v004 vs Stockfish 220225 PGN games

Qualification tournament 3 mins + 1 sec /all on powerful hardware Ryzen 9 3900x to select Group A, B and C leader engines

Group A LONG TC TOURNAMENT BETWEEN 13 TOP ENGINES

(156 games / 156 played) DOWNLOAD ALL PGN GAMES

Comment: All top 13 engines have almost the same strength, only 5 loses / wins!!

Next gauntlets  SF dev & ProteusChessSF vs best original engines will be more thrilling

Updates:

Blue Marlin 14.8, Swordfish 14.8, Stockfish PB 170222, CorChess PB 070222, ProteusChess SF v003 (new architecture & Sopel's NNUE, less risky style)

Replaced with my PRIVATE ProteusChessSF-dev for testing purposes (but all games are available and comments and suggestions are welcome here)

Engines are too frequently updated for my limited hardware that doesn't let me to play concurrent games. So I've decided to completely change tournament formula, using also 8 CPUs (30-40 moves depth on starting position) on 2 old Snapdragon smartphones for Group B and C and  reserve the better hardware for testing especially few TOP engines ignored by rating lists at long time control  2 hours + 30 secs for move / all  (40-50 moves depth on starting position, better than most rating list and online tournaments) using for all challengers Perfect2021.bin (8 moves) , 8moves_v3.pgn opening books used for Stockfish tests and since game 78 to 105 NO BOOK  (to test engines also during this phase) + Tablebases Syzygy 6 pieces.  I add new engines, opening books, update existing ones, replace NNUEs if compatibles for fine tuning each engine.  I keep in the tournament the updated engines only if there isn't a regression in the performance. 

Ethereal 13.50 GITHUB no NNUE (3300 ELO) and Zahak 9.0-Android (3150 ELO) are sparring partners to test Group B & C engines in 10 games gauntlets!

GROUP B LONG TC GAUNTLET 2 hours + 30 secs for move  / ALL

ETHEREAL 13.xx GITHUB vs STRONG ENGINES 3300-3400 ELO Android Snapdragon 8 CPUs (+-32 moves depth 2 Mn/s)

All Ethereal 13.50 vs Igel 3.0.10 PGN games

All Ethereal 13.50 vs Laser 1.8 PGN games

All Ethereal 13.50 vs RubiChess 2021 PGN games

All Ethereal 13.50 vs Fire 8.2 PGN games  Interesting because both haven't NNUE

All Ethereal 13.50 vs DarkToga1.1 NN PGN games

All Ethereal 13.50 vs LC0 0.28.2 NN PGN games

All Ethereal 13.50 vs Tucano 10 NN PGN games

All Ethereal 13.50 vs Minic 3.18 PGN games

All Ethereal 13.50 vs Pedone 3.1 PGN games

All Ethereal 13.46 vs Fire8.NN.MC.3 PGN games

All Ethereal 13.46 vs Berserk 8.5.1 PGN games

GROUP C LONG TC GAUNTLET 2 hours + 30 secs for move  / ALL

Zahak 9.0-Android vs GOOD ENGINES 3000-3200 ELO Android Snapdragon 8 CPUs (+-32 moves depth 500 kn/s)

All Zahak 9.0-Android vs Rodent IV 0.22

All Zahak 9.0-Android vs Marvin 5.2.0

All Zahak 9.0-Android vs Admete 1.4.0 PGN games

All Zahak 9.0-Android vs Arasan 23.2 PGN games

All Zahak 9.0-Android vs Gambit Fruit 2.2 PGN games

All Zahak 9.0-Android vs Weiss 2.0 PGN games

All Zahak 9.0-Android vs Stash 32.5 PGN games

All Zahak 9.0-Android vs Demolito 2021-10-21 PGN games

All Zahak 9.0-Android vs Winter 0.98 PGN games

All Zahak 9.0-Android vs Counter 4.0 PGN games

All Zahak 9.0-Android vs Velvet 3.1.3 PGN games

All Zahak 9.0-Android vs Drofa 3.3.0 PGN games

All Zahak 9.0-Android vs Combusken 2.0.0 PGN games

Removed all the not GPLv3 compliant Stockfish derivatives: Raubfisch, Fischerov, Eman, Killfish, Zeus 11, AI-15, Spider, Bluefish NN 180921 , RedFish NN 210921 and Alfa SubZero by Bookmaker.

Switching to 2 hours + 30 secs /all                                       

Tournament rules:  150 secs /40 + 150 secs /40 + 1 sec /all.  Opening books  M13.4.bin, Goi040121.bin, Komodo.bin , Predator 2.3 bin, Live Book chessdb.cn . Tablebases Sygyzy 6 pieces, NNUE and/or MCTS enabled if availables. I add new engines, update existing ones (also replacing NNUEs if compatibles, for fine tuning each engine) and I remove weaker engines. I keep in the tournament the updated engines only if there isn't a regression in the performance. 

Note: PGN Games available on request sending a PM to Alexchess on BanksiaGui Forum

According to GM Larry Kaukman (Dragon 2.6 author) evaluations about real engines ELO,      I have lowered all engines score to match computer to human ELO (EG: now Stockfish 14.1 has a rating of 3500 ELO). 

New updates: Arasan 23.2, Swordfish 14.7, Black Marlin 14.7, Koivisto 7.9, Crystal 4.0,  Stockfish Plus MTCS 020122 + Predator 2.3 book, Kayra 1.1 + Kaira 1.1.bin, Seer 2.4.0, Don 211211, Berserk 8.5.1, Wasp 5.0, Coiled 1.1, Fat Titz 2.0 110122 (Sopel) chessdb.cn , SF-PB 080121 + M13.4, Rebel 14 NN.

SuperBlitz 171121 40 x 150 secs + 40 x 150 secs +1 /ALL - Tablebases 6 man  Syzygy + books

73 engines including not GPLv3 compliants only for statistical purposes never sharing them!

(Verified: they aren't better than latest Stockfish-dev. Authors give nothing to chess community)

Note: Blitz evaluation is 150 ELO more that at long time control

(Set browser size to 250% for a perfect view)

SuperRapid 281021 40 x 300 secs + 40 x 300 secs +1 /ALL - Tablebases 6 man  Syzygy + books

PLEASE leave comments only HERE or in BanksiaGui Forum (where I'm moderator, so I can freely express my opinions and eventually correct my mistakes editing the post) in Vernon's Engine-Chess Forum and in Chess2U. 

FAMOUS RATING LISTS       (THOUSANDS OF GAMES, BUT SOMETIMES LESS KNOWN TOP ENGINES ARE MISSING!) 

Ipmanchess - Accurate Rating Lists on I3 , I7 and I9  (New!!)

CEGT

CCRL

SSDF (obsolete)

SPCC

CEDR (Includes not GPLv3 compliant engines) 

http://www.amateurschach.de/ Frank Chess Page (engine infos) 

TOPIC: https://www.reddit.com/r/ComputerChess/comments/kwmxjm/engines_opening_books/

MY FREEWARE ENGINES DOWNLOAD SOURCES:

SDCHESS.RU

FORCHESS.RU

MOTORES DE AJEDREZ AC (Facebook)

CHESS ENGINES FOR ANDROID

ACEPOINT.DE (Mac Silicon M1)

SUPPORT FREEWARE OPEN SOURCE ENGINES AND CHESS GUIs!!!!

BanksiaGUI by Pham Nguyen Hong - FREE alternative to  Chessbase Fritz, fully configurable!

Arena 3.5.1 by Martin Blume - Another good alternative, but not developed anymore by the author, and a little bugged.

The RubiChess1.9 should be update to 2.0 version, just released 3 days ago.

Thanks jjlai1111  - Just updated with RubiChess 2.0 NNUE results. If you know the link of other strong engines just tell me and I'll add to Arena 

And with another update Igel already released 2.9.0 on December 26 2020. It's about 200 elo stronger than this version.

Yes I know about Igel 2.90 NNUE , but It Is only AVX2 or BM2 and my system supports  Popcnt SSE3 or SSE4. If you find this version, please tell me and I will add It to Arena.

ok

Just updated the table. KillFish has won the only game lost by the latest Stockfish until now!

how about the new MCTS engine: Ceres?

and make sure the leela version is 27.0-rc1, if not then update it, thanks!

OK, I search the links of the executables for the next session starting from blitz. I have selected the very best engines, because they are all very close in ranking. I have updated the semi-blitz table with  final results (Zeus 11 is the winner) and soon I'll start the Long Time Tournament with 8 engines. I have also tried to compile LC0 natively for Apple Silicon M1 (so, directly on Mac, I could use  8 CPU and it is 3 times faster) but it doesn't work until now. 

ok, and no way! Chessbase just released the FAT FRITZ 2.0 !!! 1 hour ago!!!

Thank you! I'll add it togheter with Ceres to the new qualification blitz.

The "giant manifacturer" (sic) has like 10 employees, as far as I know .

Hi Sred! Changed "giant" to "historical"  . I really hope that Fat Fritz 2.0 will become the new leader because, since the retirement of Frans Morsch, Fritz has not been improved greatly by Gyula Horváth, Vasik Rajlich and Frank Schneider. Same for the interface: I have used Fritz 17 of a friend at the chessclub for the preliminary blitz, and it's almost identical to Fritz 8 that I have bought in 2003!! They could publish Fritz and Chessbase also for Mac and, why not? Linux, to increase sales. Since I have switched to mac, I have used Winboard, xboard and recently Arena. And now I've discovered BanksiaGui (for Windows, Mac and Linux) that's even better especially regarding engines and tournaments management, but also for the GUI, very bizarre but completely re-configurable. I 'll use it for next tournament, when all best engines will be natively compiled for Silicon M1.  That's the strenght of open source. Stockfish has been continuosly inproved in ten years  by very skilled programmers, sharing their knowledge for free!  Now also Chessbase has discovered the potential of open source and sells an engine based on it and Leela Chess Zero. I don't know if it is possible but, If open source programmers are allowed to modify it, Fat Fritz 3.0 will be incredible (and maybe also for Mac and Linux)

 My results are similar to this list.. but it lacks of derivates. Courtesy of ComputerChess.org

jjlai1111 Ceres doesn't work on my system, like Igel 2.9.0 and Pedone 3.0. I need a version for popcnt, sse3 or sse41. I have told about Fat Fritz  2.0 to my friends at the chess club that have a PC (it is not upgradable from Fritz 17) ... but Stockfish 2021 (and derivates are already stronger)   

thx