Information about the participants of the 2nd Lichess Bots Championship

Pure Python engine used in PyChess GUI github.com/pychess/pychess. Plays all variants available on FICS/ICC/Lichess (except bughouse) + placement, asean, cambodian, makruk, sittuyin.
Hosted on Heroku (Free plan, 512 MB RAM, 1 worker process)

Stockfish running on Windows 10 Home. CPU overclocked 3.6 GHz. Stockfish uses 3 GB of RAM. Using opening book and tablebases.

Zurichess running on Intel Core i7-5960X CPU @ 3.00GHz. 8GiB of RAM, no ponder, dc.bin (http://rebel13.nl/download/books.html) opening book.

My CPU is AMD A9-9420 Radeon R5.

Stockfish 10 is running on Windows 10 Home, on a Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz, variating amount of GB RAM. Using an Opening Book, No Tablebases.

Self written engine in Java. Single core (i7-4930K), no transposition table or anything.

During my first match I used (lichess-bot:) Xiphos 0.4 (in certain openings I'll switch it to iCE 3) & Critter 1.6a (later in the game). I also use an opening book. I'm working on a better opening book and better settings, but those aren't ready yet.

Stockfish Dev running on 6 threads on an i7-7700k at stock clock speed. Opening book and tablebases are being used.