
A pure, simple game of logic and deduction. Random generated puzzles enables unlimited replay. Custom board layouts let you adjust the difficulty and time needed to solve a puzzle.
Prices for US · Updated 9/2/2026

Einstein's Riddle - Kotaku
Kotaku · 8/21/2026

Only 2% of People Can Solve Einstein’s Riddle—Can You? - Reader's Digest
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Can You Solve 'Einstein's Riddle?' - Mental Floss
Mental Floss · 7/10/2016

The world's hardest games and puzzles: from GCHQ to Einstein's riddle - The Week
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