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Engine Arena 1.9.12 - interesting chess GUI

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Engine Arena -  Windows x64 desktop application for UCI engine testing. 0.2.0 Beta 2 for testing and feedback; production acceptance pending.  Author: S aintlouischess What changed? ngine Arena 1.9.12 is a maintenance update to 1.9.7, with startup and Rating Center fixes plus an optional opponent-rating-range comparison. It is the same application build Mark is using for the ongoing 400-entry, 159,600-game test. Designed by Mark Young. Coding and implementation by OpenAI Codex, under Mark Young's direction. What changed More reliable startup and closing. Large workspaces have more time to open, with the current startup step and elapsed time displayed. Startup errors have a readable details panel. Closing during initialization cancels startup cleanly; normal closing still waits for saving and backups. Interface loading fixes. Corrects the backupHealth is not defined and renderStandings is not defined errors. Interface requests wait for the page scripts to be ready, without wait...
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PlentyChess 8.0.7 SE - new version strong chess engine

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PlentyChess -  A UCI chess engine with a neural network based evaluation. Rating Chess Engines Diary CEDR=3872 PlentyChess 8.0.0 has just been released!  It's always exciting when one of the world's strongest engines gets an update. The previous version took 3rd place in the 1st Chess Engine League — let's find out how much stronger it is now! PlentyChess Alamat 7.0.41 SE vs other engines: Obsidian dev-16.15 SE 33/63 +3 63 games Caissa 1.24 JA 26/50 +2 50 games Motor 0.9.0 25.5/45 +6 45 games Reckless 0.9.0 dev-2a847427 20/44 -4 44 games Clover 9.1 JA 25/43 +7 43 games Berserk 20250622 20/41 -1 41 games Stockfish 17.1 18/38 -2 38 games Integral 7 dev.8bab JA 16.5/36 -3 36 games Quanticade Cronus 3.0 JA 21/35 +7 35 games Reckless 0.9.0 dev-0dd5b9ac 17.5/35 +0 35 games Viridithas 19.0.1 17/32 +2 32 games Dragon 3.3 15/28 +2 28 games Stormphrax 7.0.0 JA 15/25 +5 25 games Cinder 0.4.1 15/25 +5 25 games Alexandria 8.1.2 JA 14/25 +3 25 games Quanticade Cronus 3.0 13.5/24 +3 24 ...
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Zigqueen 6.5.0 - new version chess engine

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Zigqueen is a UCI chess engine written in Zig (0.15.2) with a from-scratch NNUE evaluation and a single-threaded alpha-beta search. Engine code is a clean-room implementation (see CLEAN_ROOM_RULES.md); the network is trained from the publicly published Stockfish NNUE training datasets. Author: Stierms  Rating Chess Engines Diary CEDR=3851 What's new? Strength 3717 (95%: 3713–3721) at one thread, from 3,256 games against 22 engines centred on 3700 on the CCRL Blitz list; our own estimate, not a CCRL rating. 6.4.0's 3701 was measured against a weaker field (mean 3667), so the two numbers are not directly comparable. What's new About 20% faster, with the same search. The x86-64 release binaries are profile-guided (PGO) builds. New time manager: it always has a searched move ready and spends extra time when the best move or the score is unstable. Own Syzygy tablebase prober, replacing Fathom. Exchange evaluation no longer lets a piece pinned to its king recapture, so some winni...
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Incipit 0.5.0 wins New Chess Engines - Examination

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  Here are the exam results for the new chess engines, with Critter 1.6a acting as the examiner. Engines that outperformed the examiner in the tournament will move on to the qualifiers for the CEDR Chess Engine League, while those that didn’t will not be tested further by us.*   The tournament champion was Incipit 0.5.   *This rule does not apply to engines sponsored by their authors or others. CEDR 903.628 games download (until 30.06.2026) All Games 72.725 CEDR from 01.10.2026 download . 💾 Tournament games : 351 download 💻 Asus Zenbook, AMD Ryzen 9 6900HX, RAM 32,0 GB   🖬 GUI - Arena #chessenginesdiary Country - Poland, City - Malbork   🕓 Time 3'+3" P Engine CEDR Score (Tie) Chg +/-/= 1: Incipit 0.5.0 2400 24.5 / 26 299.00 +148 (+23 -0 =3) 2: Zenith 2.0.0 2400 22.5 / 26 254.25 +130 (+20 -1 =5) 3: Chessenger 3....
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