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New Chess Engines Added to MEGA Drive - 23.10.2026 ( 72 files added)

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Dear readers and friends of the Chess Engines Diary , Today, we're pleased to announce another update to the MEGA disk . As a bonus for our supporters, we have added a total of 72 new files , including chess engines, opening books, and games. Look: New Bonus Rules from the Chess Diary MEGA Dysk - update 23.10 .2026 (72 files added) Engines for Windows: (45 files):  AggroChess 3.5.0.7z AnkaX 1.0.2.7z Arabica 0.1.3.7z Arabica 0.2.0.7z AthenaChess vf4b82f3.7z Buster 7.0.2.7z Chessenger 3.1.7z Chromatique 4.0.0.7z Coach 1.0.0.7z Coda 0.9.5.7z Cyrus-IS-Chess 1.0.0.7z Fructosita 3.0.0.7z Gaiachess 4.4.1.7z Grail 3.0.0.7z Igel 3.8.0.7z Koi 1.1.2.7z Koi 1.1.3.7z Kurgan 1.7z Kurgan 1 for Android.7z Kurgan 1 for MacOS.7z Lk-47 1.0.7z LuckyChess dev-caf625a.7z Machete 0.5.0.7z Machete 0.5.1.7z Nightwing 1.0.1023.7z Nightwing 1.0.1048.7z Nightwing 1.0.982.7z Nightwing 1.0.997.7z Pawnstar 1.2.0.7z Pawnstar 1.2.0 html.7z PlentyChess_8.0.7SE.7z Private19sf 3.20_VICE_261021.7z Psion-chess 1.4.2.7...
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Chess engine: SF-Poly 181026 (derived from Stockfish)

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UCI Chess engine: SF-Poly  (derived from Stockfish) Rating Chess Engines Diary CEDR=3892 SF-Poly 290826 vs other engines: ShashChess 41.1 9/16 +2 16 Games Coda 0.9.4 9/16 +2 16 Games Hlamnick 290826 8/16 +0 16 Games Cinder 0.6.1 8/16 +0 16 Games Raid 7.5 8/16 +0 16 Games PlentyChess 8.0.0 JA 8/16 +0 16 Games Reckless 0.10.0 26.8.26-dev 8/16 +0 16 Games Wordfish 5.20-040826 5/10 +0 10 Games Reckless 0.10.0 5/10 +0 10 Games HORIZON + 5/10 +0 10 Games CorChess 20260826 5/10 +0 10 Games CorChess 20260902 3/6 +0 6 Games Stormphrax 8.0.0 3/6 +0 6 Games Stockfish 18 3/6 +0 6 Games Stockfish 20260825 Ivec 3/6 +0 6 Games Cool Iris 18 3/6 +0 6 Games SF-Poly 181026 - download   mirror
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A large pack of new chess engines (24 files)

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 A large pack of new  chess engines (24 files): AggroChess 3.5.0.7z Arabica 0.2.0.7z Arabica 0.2.0 for MacOS.7z Buster 7.0.2.7z Coach 1.0.0.7z Cyrus-IS-Chess 1.0.0.7z Cyrus-IS-Chess 1.0.0 for Android.7z Cyrus-IS-Chess 1.0.0 for MacOS.7z Fructosita 3.0.0.7z Kurgan 1.7z Kurgan 1 for Android.7z Kurgan 1 for MacOS.7z LuckyChess dev-caf625a.7z LuckyChess dev-caf625a for MacOS.7z Machete 0.5.0.7z Machete 0.5.1.7z Machete 0.5.1 for MacOS.7z Nightwing 1.0.1023.7z Nightwing 1.0.1048.7z Psion-chess 1.5.2.7z Russell 1.8.7z Snail 1.12.7z Styx 0.1.7z UiagBot 1.3.7z EnginesPack 23.10.2026     mirror
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Coda 0.9.5 - new version chess engine

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Coda is a rewrite of GoChess in Rust, 100% vibe-coded with Claude Code. The initial implememntation - board representation, search, NNUE evaluation, SIMD, and UCI protocol — was written from scratch in a single session - building on top of the work done in gochess. Author: Adam Twiss  Rating Chess Engines Diary CEDR=3862 Coda what's new? Network Improvements Added Pawn features to the NNUE model - an idea first implemented in Pawnocchio, and since now widely implemented and proven in many other engines. A new linear readout from the first hidden layer keeps the evaluation monotonic in material in decided positions; previously, saturated hidden layers left the net indifferent to winning or losing further material. Added extra fine-tuning steps to the training recipe. NPS Performance Improvements Added SIMD kernel for Dual activation in L1. Replaced various pieces of code with alternate branchless implementations Lazy evaluation of various threat deltas and pins to avoid wasted...
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Chess engine: Private19sf 3.20_VICE_261021 (Stockfish derivatives)

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Private19Sf_VICE Rating Chess Engines Diary CEDR=3897 Private19sf is a private engine developed by Tanick Ramz(Originally was his) and Team JaR Heads (Tyler, Alex and Tom) derived from  the most strongest engine in the world Stockfish. P19sf has been in existence since 2022. some tests of it were done before the forum chess2u came down! This engine is for private tests. But wait, what is our vision: Team JaR Heads are not interested in chasing after every latest stockfish code released, While many "authors" chase after latest developments but still make no progress is such a damn shame. IF YOU CAN'T FIND  IMPROVEMENTS YOU ARE NOT LOOKING HARD ENOUGH/LOOKING IN THE WRONG PLACES. we are interested in that very code that was left out for dead. we enhance and make it useful.  Thanks:                                 .................................................................................
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New Chess Engines - Examination, by Chess Engines Diary - 23.10.2026

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A new round of testing for chess engines was carried out using an intriguing GUI called EnginesArena. The rankings aren’t final, as some engines ran into errors. Testing will continue for those that managed to outperform the benchmark engine, Critter, in the standings.   CEDR 903.628 games download (until 30.06.2026) All Games 72.725 CEDR from 01.10.2026 download . 💾 Tournament games : 334 download 💻 Asus Zenbook, AMD Ryzen 9 6900HX, RAM 32,0 GB   🖬 GUI - EnginesArena #chessenginesdiary Country - Poland, City - Malbork   🕓 Time 3'+3"
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