v5.0.0
This release is a strength improvement of approximately 110 elo compared to version 4.0. This comes entirely from improvements in search; the neural network is the same as the one in version 4.0.
The release binaries are categorized by microarchitecture levels. The general rule of thumb is:
x86-64-v3
will work on modern (2015+) CPUs (avx2, bmi1, lzcnt, etc.)x86-64-v2
will work on older (2009+) CPUs (popcnt, sse4, etc.)x86-64
will work on any x86_64 CPU.