v1.5.0

Version 1.5.0 Update

A new version of Avalanche is here. The major feature of this release is the introduction of parallel search implementing the Lazy SMP algorithm. Avalanche now supports the Threads option, defaulting to 1.

Currently, using 4 threads makes Avalanche roughly 80 ELO stronger than the single-threaded version when testing against itself.

Other improvements include a stronger neural net trained over more lichess data, as well as some search tunings.

Avalanche 1.5.0 wins roughly twice as much as it loses against v1.4.0. It is expected to be around 70 ELO stronger than Avalanche 1.4.0, with an estimated 1CPU CCRL ELO of around 3218. This number will probably end up somewhere between [3175, 3225]. 4CPU is estimated to be around [3260, 3310].

STC Unbalanced Human Openings:
Score of v1.5.0 vs v1.4.0: 175 - 93 - 132  [0.603] 400
...      v1.5.0 playing White: 113 - 24 - 63  [0.723] 200
...      v1.5.0 playing Black: 62 - 69 - 69  [0.482] 200
...      White vs Black: 182 - 86 - 132  [0.620] 400
Elo difference: 72.2 +/- 28.2, LOS: 100.0 %, DrawRatio: 33.0 %

Attached are the binaries. Thanks for the continued support!