Credits
Chess pieces
Cburnett pieces by Colin M. L. Burnett (BSD license)
Antichess solution
Built on Tolius' 1. e3 solution, and proved with shakmaty by Niklas Fiekas (GPL-3.0), guided by the Antichess network of Fairy-Stockfish
Atomic analysis
By varifish and provari, below, which build on Atomic-Stockfish by Belzedar94
provari
Built on shakmaty and shakmaty-syzygy by Niklas Fiekas (GPL-3.0), zstd (BSD) and Rust crates under MIT or Apache-2.0 licenses, with its network evaluation following Atomic-Stockfish's, which derives from Stockfish by the Stockfish developers and Fairy-Stockfish; the network atomic_run3b_e202_l05 by Belzedar94; and Lichess's Atomic tablebases. Source code (GPL-3.0)
varifish
A translation into Rust of Stockfish by the Stockfish developers (GPL-3.0), with Atomic's search from Atomic-Stockfish by Belzedar94. For Atomic, the network atomic_run3b_e202_l05 by Belzedar94 and Lichess's Atomic tablebases; for chess, Stockfish's network nn-c9e480e92425, trained on data from Leela Chess Zero under the Open Database License. Source code (GPL-3.0)