Master chess through legendary games by replaying iconic positions and testing your calculation against the engine
Free word game tools for word nerds
Stage
Startup
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Founded
2026
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Based in
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Pricing model
Freemium
Free
Pricing
Player plan: $4.99 per month or $50 per year. Yearly billing saves 16% and works out to $4.17 a month. Includes unlimited positions, record and export, 1080p quality, and basic AI analysis. 30-day money-back guarantee.
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Key features
Replay iconic chess positions from legendary games
Test calculation against AI engine
Challenge friends with shareable links
Compare continuation against best engine line
Game recording and export
Basic AI analysis
1080p quality output
Play against engine from any position
Curated library of historic positions
Free position challenges without account
Anagram Generator with support for eight languages
Scrabble Word Finder with NWL23 and Collins CSW24 dictionaries
Information theory-based Wordle Solver
Synonym Finder with parts of speech grouping
Rhyme Finder grouped by syllable count
Crossword Maker with clue suggestions
Word Search Maker with three difficulty levels
Runs entirely in browser with no server processing
Offline functionality with cached dictionaries
What makes it different
Play from the exact moment of legendary games, not just study them
Designed for pausing chess videos to calculate positions
Step into the shoes of chess legends at critical game moments
Compare your moves directly against engine analysis
Built by an indie hacker solving a personal chess problem
Fast, mobile-friendly performance with no unnecessary dependencies
No login walls or dark patterns, plain vanilla JavaScript
Information theory optimization for mathematically optimal Wordle moves
Dual Scrabble dictionary support for North American and international play
ReplayChess
LexiLab