lazy-smp

Full-strength Caro (Gomoku variant) AI with Lazy SMP parallel search, VCF solver, C# 14/.NET 10 backend, SvelteKit frontend. Hot-seat PvP, PvAI and AIvAI modes, 5 difficulty levels, UCI protocol, WebSocket bridge.

A UCI-compatible C++20 chess engine with NNUE and handcrafted evaluation, Lazy SMP search, and reproducible Elo testing.

Chess engine in C++17 written from scratch: bitboards, PVS search with singular extensions, Lazy SMP, and an NNUE trained on its own self-play. Around 3200 on the CCRL blitz scale. UCI.

Lazy-SMP/Negamax UCI chess engine in Python

Pygin - a from-scratch UCI chess engine in Python + C, with a hand-written search and evaluation and the entire per-node search loop in C. Built with the help of Claude Code.

A free, open-source C++20 UCI chess engine with NNUE evaluation, Lazy SMP multithreading, and Syzygy tablebase support. Named after Coco from Witch Hat Atelier.