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UCI Chess Engine based on Gull
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README.md

Hawkeye

UCI Chess Engine based on Gull 3-syzygy

This is a Mac version the Hawkeye chess engine by Michael Byrne based on Gull version 3.

License

The original Gull 3 source code by Vadim Demichev is in the "public domain". The modified Gull3 syzygy source/exe was released under the MIT License by Basil Falcinelli as is this software.

The syzygy code ( all files in the syzygy folder) was authored by Ronald de Man Copyright (c) 2011-2016. These files may be redistributed and/or modified without restrictions.

Currently the second strongest open source chess engine (Gull/Hawkeye) available for the Mac behind Stockfish.

Plays very strong chess at time control of 75 sec base with 1.50 sec increment:

(excerpt from tourney)

1520 of 3800 games completed...time control: 7500+150

Date: 07/10/16 : 12:49:18 Rank Name Elo + - Games Score
1 Stockfish 070916-x 3497 51 51 152 125.0
2 SugaR 2.5, a derivative 3487 50 50 152 125.5
3 Komodo 10 64-bit 3471 49 49 152 123.5
4 Stockfish 7 64 POPCNT 3430 47 47 152 118.0
5 Stockfish DD 64 SSE4.2 3362 44 44 152 107.0
6 Hawkeye 1.01 OSx64 3359 44 44 152 105.0
7 Gull 3 x64 (syzygy) 3295 43 43 152 94.0
8 Critter 1.6a 64-bit 3248 43 43 152 85.5
9 Firenzina 2.4.4 xTreme L 3194 42 42 152 75.0
10 Protector 1.9.0 3188 43 43 152 73.5
11 Mikhail 0.04 OSx 64 3171 43 43 152 70.5
12 Hakkapeliitta TCEC v2 3139 44 44 152 64.5
13 Texel 1.05 64-bit 3094 44 44 152 55.5
14 Kohai 1.0 3091 44 44 152 55.0
15 Senpai 1.0 3081 44 44 152 54.0

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