a Chess Engine Communication Protocol compliant open source chess engine by Vivien Clauzon, squashed inside a single C++ source file  licensed under the GPL v3.0. As a weekend project, it started as 2000 lines of code mailbox approach using PVS with TT, NMP, LMP and eval based on psts, and evolved to a bitboard engine using HQ, lazy SMP, and Texel tuning to optimize its tapered eval .
- A complete 2000 lines of code engine by Vivien Clauzon, CCC, October 20, 2018
- Asus tuf z390 + core i7 9700k by Vivien Clauzon, CCC, February 28, 2019
- Feature score use in search by Vivien Clauzon, CCC, July 20, 2019