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Chess engine: Velvet 3.2.0 (Windows and Linux)

on

Velvet - UCI Chess Engine
Author: Martin Hornet, 
Rating CEDR (Chess Engines Diary Rating)=3033

It is based upon my previous web-based engine Wasabi, which can be played here.
Installation
x86_64-modern - recommended for recent CPUs from 2013 onwards (requires a CPU with support for the BMI1 instruction sets)
x86_64-popcnt - for older 64-Bit CPUs, which support the POPCNT instruction, but not BMI1
x86_64-vintage - for older 64-Bit CPUs, which support neither POPCNT nor BMI1

v.3.2.0
Neural network trainer
fixed a bug which prevented successful training of networks with bigger hidden layers
added data compression support for trained network files
Neural network evaluation
increased hidden layer size from 64 to 256
implemented some optimizations:
defer updates and calculations until eval is called
remove additional hidden layers

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