How this free chess coach works
chessgator is a free chess coach in the browser. You play Maia, a human-like bot from Elo 1100 to 1900, while a coach explains the ideas behind better moves. There is no account. Analysis stays on your device.
How a session works
Pick a side and a Maia strength, then play. After each of your moves, Stockfish runs locally and the coach classifies what you played, names the idea, and can suggest a stronger line. You can step back through the game tree to try a different move without leaving the browser.
Credits
Opponent play uses Maia, a neural network trained on human games. Coaching analysis uses Stockfish. Both run in the browser through ONNX Runtime and WebAssembly. chessgator is built by Joel Peckham. Source and third-party licenses are on the notices page.
More on Maia, how the coach explains moves, and the FAQ.