CorChess Presentation

[massimilianogoi]

CorChess is a clone of Stockfish maintained for better performance on long time controls,
trying at least partially to fill the gap between regular tests and demands of correspondence players.

The first idea was to improve the scalability of Stockfish 8 and from CorChess 2 I a mathematical model for search tree efficiency is followed.

[massimilianogoi]

Due to a recent Oliprog's test on The OutSkirts Forum (although I'm not trusting so much engines strength tournaments with opening books) it has been noticed that CorChess is way too similar to the standard Stockfish, to the point that I'm wondering if there are practical changes or not...

AI 29.1 AVX2 Embedded Net vs. CorChess 3 dev-20221201-nogit AVX2 Goi

Processor AMD A10 – 9700 R7,10 Compute Cores 4C + 6G - 3.50 GHz - RAM 8.00 GB - 64-bit operating system - x64 processor - Windows 10 Pro - 1024 mb hash – Fritz 16 GUI – Permanent Brain: ON – opening book: GM Test Book ctg - final tablebases: Syzygy 3-4-5 pieces - both engines play with 2 threads and large pages – NNUE: CorChess Goi: nn-ad9b42354671.nnue - Al Self Learning ON

Book Settings:

1.Tournament UNCHECKED
2.Min games 3-35
3.Variety of play 215
4.Influence of learn 0
5.Learning strength 0

DESKTOP-TORM2PL, Blitz 4min+1seg 0


1 AI 29.1 AVX2 +1 +7/=269/-6 50.18% 141.5/282
2 CorChess 3 dev-20221201-nogit -1 +6/=269/-7 49.82% 140.5/282

Games in PGN: https://www.mediafire.com/file/s2kyx0iu ... 3.pgn/file

[ZamChess]

CorChess PB 141023 by Eduard Nemet

”CorChess PB 141023 --> Engine for fast computers and intensive analyzes! I used the original CorChess code. Support for two Polyglot books and the option MinimumThinkingTime are implemented here now. The network is external, because less data volume is required. Download (avx2, avx512, bmi2, sse41, modern, source code): https://pixeldrain.com/u/oBC2JLyK ”

Thank you Eduard !

[janus]

CorChess v24102023


http://www.chess.ultimaiq.net/stockfish.html

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