Classic chess pieces © Colin M.L. Burnett (Cburnett).
SVG files from https://github.com/lichess-org/lila/tree/master/public/piece/cburnett
Licensed GPL-2.0-or-later; distributed here under GPLv3 (COPYING.txt).
The artwork is unmodified. These SVG files are the editable source.
No endorsement by the artist or Lichess is implied.