ylva.c

A simple chess engine in C for educational purposes.

This is a rewrite of an older version that was in C++. A few features are missing and some stuff needs to be fixed as shown in Todos. These will be worked on subject to time constraints.

Supported UCI commands

• go : wtime, btime, winc, binc, movestogo, movetime, depth
• position: all arguments
• uci
• isready

Other commands

• perft n will count nodes to depth n

Todos

• Complete writing move ordering
• Add killer move heuristic
• Add PSQT evaluation

Acknowledgements

• Richard Allbert's, Vice series on his Bluefever Software channel
• Marcel Vanthoor's Rustic chess engine
• The Weiss engine
• Chess Programming Wiki
• Oliver Brausch's Olithink, specifically his method for peeking std input to check for "stop" command interrupting engine search
• Analog Hors' explanation of magic bitboards
• Tord Romstard's source code for finding magic numbers
• Sebastian Lague's video, which was also the original inspiration for Ylva.

License

MIT