Blunderbase: A Personal Chess Database
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I made a free and open source chess database. It's useful for personal game study and gathering statistics across sites. Supports import from lichess, chess.com, FICS and PGN then runs Stockfish and Maia over every game.With it you can analyze your games, take notes on positions and look up openings. The self hosted web version includes a remote-runner that allows connecting engines running on other machines (finally, the CPUs of the AI server at work come to use :D) and an MCP server with a live board to push positions and comments to.Roadmap: iOS and Android companion apps, a sync service, multi-engine analysis, and a correspondence game mode supporting multiple long running calculations.Looking forward to feedback and critique.Docker, Windows, Mac: https://blunderbase.org Demo: https://demo.blunderbase.org (read-only)
HN · launched Sep 6, 2026 · 6 upvotes (top 67%) · 1 view
Niche: ai chess training platforms · 62 launches, 8 in the last 7 days ▲ +14% · Explore this niche →
Category and tags
- Horizontal
- Vertical SaaS
- B2C
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 62 launches in ai chess training platforms →
Could you build this?
Yes A personal chess database importing PGNs and calling local Stockfish and Maia CLI binaries/libraries with a web or desktop UI is well within vibe-coding scope.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one : 126 launches clear the similarity bar, closest 8 shown.
Attention rank: #95 of 127 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 312 days after the earliest competitor.
- ChessAnalysis · ph · 2026-10-19 · 2 upvotes · similarity 0.55
- ChessAnalyzer · ph · 2026-11-06 · 2 upvotes · similarity 0.54
- ChessTier · ph · 2026-10-03 · 1 upvotes · similarity 0.53
- See The Mate - Free Chess Analysis · ph · 2026-09-10 · 1 upvotes · similarity 0.53
- I built a chess explorer that explains strategy instead of just stats · hn · 2026-01-21 · 14 upvotes · similarity 0.51
- BlunderLens · ph · 2026-10-20 · 1 upvotes · similarity 0.50
- ChessSum.com · ph · 2026-10-08 · 2 upvotes · similarity 0.50
- Chess Journal · ph · 2026-09-12 · 2 upvotes · similarity 0.49
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