Learn
Guides
How to play Eitanium, how to solve any logic grid puzzle,
and the true story behind Einstein's Riddle.
Start here
Three short guides, written by the person who made the game.
New to logic puzzles?
Start with the general guide, then meet the game.
Already playing?
The Eitanium guide puts every rule, tool and mode in one place.
How to Play Eitanium
The grid, the numbers, anchor and direction clues, row totals, Hints, stars and the four game modes. Five minutes, start to finish.
Read the guide →How to Solve Logic Grid Puzzles
The elimination method that cracks every logic grid puzzle, with a small worked example and the mistakes that trip most people up.
Read the guide →Einstein's Riddle Explained
The famous five-houses puzzle: where it really came from, why the "only 2% can solve it" line is a myth, and how to solve it without guessing.
Read the guide →Ready to try the real thing?
Eitanium is free on Google Play.
Level 1 is gentle on purpose.