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Plychess
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Tools
AI + Chess utilities to help you analyze and create.
Elo Gain/Loss Calculator
Estimate rating change from K × (S − E).
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Stockfish Output Explainer
Explain depth, eval, mate, and PV.
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Chess960 Castling Helper
Final squares + checklist (no confusion).
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Interactive Chess Board
Drag pieces, legal moves, load FEN.
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Chess Diagram Maker
FEN→PNG and PGN→WebM for pro diagrams.
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Free Online PGN Analysis
Analyze chess PGN files online with visualization and move exploration.
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Online PGN Viewer
Open and view chess PGN files online to replay games.
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PGN to GIF Converter
Convert chess PGN games to animated GIF for social media.
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Chess Video Generator
Create animated chess move WebM/MP4 from PGN.
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Canadian Ratings Estimator
Estimate CFC rating change from event results.
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Chess Clock
Two-player clock with presets and increments.
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PGN Cleaner
Normalize, strip comments, and tidy PGN files.
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FEN Validator
Validate FEN and inspect fields & piece counts.
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Opening Explorer
Browse openings and learn common continuations.
Open
Elo Gain/Loss Calculator
Expected score + K-factor → estimated rating change.
Open
Stockfish Output Explainer
Explain depth, eval, mate, and PV in plain English.
Open
Chess960 Castling Helper
Final squares + rules + checklist for castling.
Open
Chess960 Generator
Generate Fischer Random start positions.
Open
More tools are coming soon. Click into each tool for details.