# Chessiro

> Chessiro is a free AI chess coach and chess improvement platform. Players analyze their real games (imported from Chess.com, Lichess, or PGN), get plain-English explanations for every mistake, and train with puzzles generated from the exact positions they misplayed. Chessiro also offers online play, bot opponents, an openings explorer, and a full chess glossary.

Chessiro is built for players from 0 to 1800 Elo who want structured, personalized improvement instead of generic puzzles. Game analysis is free and unlimited.

Last updated: 2026-07-19.

## Core product

- [Home](https://chessiro.com/): Overview of the AI chess coach and training platform
- [Free PGN game analysis](https://chessiro.com/game/pgn): Paste any PGN for a free engine review with AI coach explanations
- [Play chess online](https://chessiro.com/play): Online games, bot opponents, and pass-and-play
- [Mistake training](https://chessiro.com/coach): Puzzles generated from your own blunders, with spaced repetition
- [Pricing](https://chessiro.com/pricing): Free and paid plans

## AI coach differentiators

- Mistake-based training: recurring mistakes from your reviewed games turn into practice puzzles built from your own positions, so training targets your real weaknesses
- Verified, engine-grounded explanations: every AI coach explanation is grounded in Stockfish analysis of the actual position, not generic advice

## Chess openings

- [Chess openings explorer](https://chessiro.com/openings): Every chess opening explained with moves, ECO codes, and plans
- [Best chess openings for White](https://chessiro.com/openings/best-chess-openings-for-white): The 7 best openings for White — Italian Game, Ruy Lopez, London System, Queen's Gambit — and who should play each
- [Best chess openings for Black](https://chessiro.com/openings/best-chess-openings-for-black): The best openings for Black against 1.e4 and 1.d4 — Caro-Kann, Sicilian, French, King's Indian, Slav — solid and aggressive options by level
- [Best chess openings for beginners](https://chessiro.com/openings/best-chess-openings-for-beginners): The 7 best openings for beginners, chosen for clear plans and low memorization, each explained move by move

## Learn chess

- [Chess terms glossary](https://chessiro.com/chess-terms): Plain-English definitions of chess tactics, strategy, and rules terms
- [Classic game reviews](https://chessiro.com/classic-games): Classic games annotated by the Chessiro AI Coach
- [Blog](https://chessiro.com/blog): Guides on chess training, game analysis, and improvement

## Latest guides

- [Best Chess Analysis Tools in 2026: Honest Comparison](https://chessiro.com/blog/best-chess-analysis-tools): Honest comparison of Chessiro, Chessigma, Chess.com Game Review, and Lichess — what each does well and what is actually free
- [How to Find Your Chess Weaknesses (and Actually Fix Them)](https://chessiro.com/blog/find-your-chess-weaknesses): A practical method for finding your real weaknesses from your own games and fixing them with targeted training
- [Chess Puzzles From Your Own Games: Why They Work Better](https://chessiro.com/blog/puzzles-from-your-own-games): Why puzzles built from your own games beat random puzzle sets, and how mistake-based training sticks
- [Free Chess Game Review: What You Get Without Paying in 2026](https://chessiro.com/blog/free-chess-game-review-guide): What a free game review actually includes in 2026, and where each platform draws the paywall

## Machine-readable resources

- [API catalog](https://chessiro.com/.well-known/api-catalog): Linkset of public API resources
- [OpenAPI description](https://chessiro.com/openapi.json): Public API surface
- [Agent skills index](https://chessiro.com/.well-known/agent-skills/index.json): Published agent skills

## Optional

- [Support and FAQ](https://chessiro.com/support): Common questions about accounts, analysis, and billing
- [Contact](https://chessiro.com/contact): Get in touch with the team