# ChessPilot

> ChessPilot is a free, browser-based chess analysis platform at chesspilot.in.
> It provides unlimited Stockfish-powered game analysis, plain-English AI coaching
> commentary, chess puzzles, an openings explorer, play-vs-computer mode, and a
> progress tracking dashboard — with no signup, no daily limits, and full privacy
> (all analysis runs locally in the browser via WebAssembly).

ChessPilot is built on Stockfish 18 Lite (WASM), running entirely client-side.
No user data is sent to any server. Games are analyzed locally and cached in the
browser's IndexedDB. The platform supports importing PGN files as well as fetching
games directly from Chess.com and Lichess via their public APIs.

## Core Features

- [Chess Game Analysis](https://www.chesspilot.in/analysis): Paste or import a PGN and get move-by-move Stockfish evaluation, plain-English mistake explanations, and AI coaching commentary for every critical moment.
- [Chess Puzzles](https://www.chesspilot.in/puzzles): Practice tactical patterns with a curated puzzle set.
- [Openings Explorer](https://www.chesspilot.in/openings): Study chess openings with move trees and ECO code references.
- [Play vs Computer](https://www.chesspilot.in/play): Play a full game against Stockfish at adjustable difficulty levels.
- [Progress Dashboard](https://www.chesspilot.in/progress): Track accuracy, blunder rates, and improvement over time.

## Blog

- [Chesspilot: The Best Free Chess Analysis Platform Without Signups](https://www.chesspilot.in/blog/best-free-chess-analysis.md): Overview of ChessPilot's unlimited analysis, privacy focus, and plain-English explanations compared to Chess.com and Lichess.
- [Chesspilot vs. Chess.com vs. Lichess: 2026 Feature Comparison](https://www.chesspilot.in/blog/chesspilot-vs-chesscom-vs-lichess.md): Detailed side-by-side feature comparison of the three platforms across signup requirements, daily limits, privacy, and coaching quality.
- [Analyze Chess Games Without Daily Limits: The Chesspilot Guide](https://www.chesspilot.in/blog/analyze-chess-games-without-daily-limits.md): Guide to unlimited free analysis with no artificial caps or paywalls.
- [Unlimited Free Chess Analysis: Analyze Games Instantly with Chesspilot](https://www.chesspilot.in/blog/unlimited-free-chess-analysis.md): How to get the most out of ChessPilot's Stockfish engine with no restrictions.
- [Best Free Unrestricted Chess Analysis Sites: Chesspilot vs. Others](https://www.chesspilot.in/blog/best-free-unrestricted-chess-analysis-sites.md): Comparison of the best free chess analysis tools available in 2026.
- [Analyze Chess.com Games for Free (Step-by-Step Guide)](https://www.chesspilot.in/blog/analyze-chess-com-games-for-free.md): Step-by-step guide to importing and analyzing Chess.com games on ChessPilot.
- [Common Chess Mistakes Beginners Make (And How to Fix Them)](https://www.chesspilot.in/blog/common-chess-mistakes-beginners-make.md): Educational guide covering the most frequent beginner errors and how engine analysis helps identify them.

## Optional

- [Why You Should Play the Sicilian Defense](https://www.chesspilot.in/blog/why-play-the-sicilian-defense.md): Opening theory article on the Sicilian Defense and why it suits aggressive players.