New version chess engine: Lynx 1.5.0 (Windows, MacOS, Linux)

Lynx it's written in C# (.NET 6). UCI protocol is needed.

Chess Engines Diary Rating CEDR=2889

Lynx release artifacts are self-contained and require no dependencies to be run.

However, you can also choose to build Lynx yourself.

Requirements

NET 6 SDK. You can find instructions about how to install it in yo

v.1.5.0

• 🔍 Add Futility pruning (FP) (#733)
• 🔍 LMR: allow when in check (#702)
• 🔍 LMR: reduce more if there's a TT move and a capture (#706)
• 🔍 Move RFP before NMP (#732)
• 🔍 SPSA search parameters tuning (#730, #764)
• ⚖️ Remove double pawns penalty [proper SPRT pawn eval] (#746)
• ⚖️ Index bishop mobility bonus by attacks count (#758)
• ⚖️ Index rook mobility bonus by attacks count exluding own pieces (#768)
• ⚖️ Add knight mobility bonus and index it by attacks count excluding own pieces (#775)
• ⚖️ Take only pawns into account for king shield (#789)
• ⚖️ Add king virtual mobility indexed by mobility count (#785)
• ⚖️ Use some Stoofvlees quiet data for eval tuning (#710)
• ⚡ Improve search logic (#725)
• ⚡ Use optimized method to check if a move was valid (#716)
• ⚡ Use a StringBuilder to generate UCI info command (#805)
• ⚡ Remove option to disable TT (#720)
• ⚡ Remove manual piece count during static eval (#698)
• ⚡ Simplify TaperedEvaluationTermByRank (#757)
• ⚡ Simplify TaperedEvaluationTermByCount (#767)
• ⚡ Simplify Aspiration windows (#802)
• 🐛 Fix index out of range exception on max depth (#708)
• 🐛 Detect threefold repetition on pvNode (#796)
• 🐛 Fix Game.MakeMove behavior on invalid moves (#804)
• Non strength-winning changes:
• Add ponder support (#772)
• Generate UCI options for search parameters dynamically (#734)
• Normalize mobility values (#788)

Lynx 1.4.0 - Individual statistics 

Jet 1.2	3.5/13	-6	13 Games
Stockfish 16.1	0/12	-12	12 Games
Marauders 3.0	0/12	-12	12 Games
HypnoS 190324	0.5/11	-10	11 Games
Big-SF 210324	0/10	-10	10 Games
SF 16.1 MPV	0/10	-10	10 Games
Reckless 0.6.0	0/10	-10	10 Games
Piglet 1.3.5	8/8	+8	8 Games
Sloth 1.7	8/8	+8	8 Games
Rice 8.0.0	0/8	-8	8 Games
Rebel 16.3	0/8	-8	8 Games
Berserk 20240311	0.5/7	-6	7 Games
Dragon free	0/6	-6	6 Games
Critter 1.6a	0/6	-6	6 Games
Ippolit 032324	0/6	-6	6 Games
Shallow 5	3.5/4	+3	4 Games
Vengeance 3.0.0	2/4	+0	4 Games
Lux 4.2	1.5/4	-1	4 Games
Devel 4.0.2.3	1/4	-2	4 Games
Journeyman 2.1	1/4	-2	4 Games
Wize 1.0	1/4	-2	4 Games

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Lynx 1.5.0 download 

github:https://github.com/lynx-chess/Lynx/releases/tag/v1.5.0