CHECKD
Analyze. Build. Share. Play.
CHECKD is a chess social platform built around a simple belief: chess analysis should not live in isolation. It should be shareable, understandable, social, and fun to revisit.
The product combines game analysis, AI coaching, social feed dynamics, repertoire building, async chat-based play, and puzzle competition in one ecosystem.
Project Summary
Existing chess platforms are strong at playing and practicing, but they do not fully capture the social, expressive, and identity-driven side of modern internet products.
CHECKD is designed as the chess platform that feels more like a living community: players post games to a feed, get instant AI coaching, build repertoires, challenge friends, and discover brilliant games from other players.
The Feed
The feed is the center of the product: a full-screen vertical stream of posted games, built with the familiarity of short-form social apps.
Full-screen Game Posts
Each post is an interactive board that can autoplay, pause, and scrub through moves.
Social Interactions
Like, comment, save, and share are native to every game post.
Stats Strip
Brilliants, great moves, best moves, inaccuracies, blunders, and accuracy scores make a game readable at a glance.
Playback Modes
Users can watch from move one, from the out-of-book point, or from the key moment that changed the game.
Game Analysis
Paste a Game Link
Users can paste a Chess.com or Lichess URL and pull the PGN into CHECKD automatically.
Stockfish Breakdown
Moves are evaluated and classified to show what was brilliant, strong, inaccurate, or costly.
Shareable Analysis
Once a game is analyzed, it can become a social post rather than a private report.
AI Coach
This is the headline feature. Instead of just showing engine marks, CHECKD turns analysis into plain-English coaching that players can actually learn from.
Explain the Mistakes
The AI coach translates engine output into understandable ideas, not just red marks and move suggestions.
Actionable Improvement
Users get a focused lesson on what to fix next instead of generic feedback.
Opening-specific Guidance
The summary can connect errors to opening plans, transitions, and recurring structural mistakes.
Follow-up Questions
Pro users can keep asking about the game to deepen understanding beyond the first summary.
Repertoire Builder
CHECKD treats opening preparation as something you can build, extend, publish, and follow socially.
Base Opening Library
A structured starter repertoire gives users a strong foundation from day one.
Extend Any Line
Users can add moves, create named variations, and fork other repertoires into their own study trees.
Private or Published
Lines can stay personal or become part of the wider community knowledge layer.
Opening Pages
Every opening can have stats, notable games, popular responses, and theory-tree previews.
Chess iMessage
CHECKD reimagines casual chess play inside chat threads, so games can unfold asynchronously alongside regular conversation.
Async Play
Two players can make moves inside chat without needing to be online at the same time.
Moves as Messages
The board lives inside the conversation, turning gameplay into part of the social thread.
Natural Share Loop
Finished chat games can flow straight into analysis and then into the feed.
Puzzle Battle
Challenge-based Puzzle Play
One player sends a puzzle pack and time limit, the other tries to beat the score.
Shared Puzzle Set
Both players receive the same problems so the contest stays fair.
Chat-native Competition
Puzzle battles live where the social relationship already exists: inside messaging.
Discovery Layer
| Feature | Purpose |
|---|---|
| Game Search | Find posted games by opening, excitement, accuracy, views, likes, and more. |
| Head to Head | Show the full rivalry story between two players across their games and streaks. |
| Opening of the Week | Drive weekly engagement with a spotlight opening, featured game, and related challenge content. |
Build Roadmap
Technical Direction
| Layer | Tool | Why |
|---|---|---|
| Frontend | Next.js | Strong fit for a responsive social product with web-first speed. |
| Styling | Tailwind CSS | Fast UI execution for a feature-rich product. |
| Backend / DB | Supabase | Handles auth, data, and real-time needs in one builder-friendly stack. |
| Chess Engine | Stockfish.js | Free browser-based analysis without needing heavy server cost. |
| AI Coach | Claude API | Turns move data into plain-English coaching. |
| Board Logic | chess.js + board UI tools | Reliable move handling and board rendering. |
Want to Talk About It?
Reach out if you want to discuss the AI coaching flow, the social product strategy, or how CHECKD could be built in phases.
Get in Touch