Master chess through legendary games by replaying iconic positions and testing your calculation against the engine
Fast word unscrambler and anagram solver for Scrabble, Words with Friends, and word games
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
Instant letter unscrambling with 286,000+ tournament words
Wildcard blank tile support with all 26 alphabet permutations
Results grouped by word length and ranked by Scrabble points
Dictionary definitions and grammatical parts of speech
Word Vault for saving and studying difficult words
Support for Scrabble TWL06, CSW21 and Words With Friends lexicons
Official 2-letter words page with A-Z filtering and scoring
Board hook and anchor constraints for board placement
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
Zero server latency—all processing happens client-side in your browser
Works completely offline as a downloadable PWA app
Tournament-grade accuracy with official Scrabble and Words With Friends dictionaries
ReplayChess
Word Unsc