How to Play Chess: A Beginner's Guide
Learn how to play chess for beginners — piece movement, basic rules, and your first 5 moves. No experience needed, just a browser and 10 minutes.
Blog
Guides, tips and mental-math tricks for the games on this site.
How to Solve Sudoku Faster: 4 Real Techniques (No Guessing)
Four real Sudoku deduction techniques — naked singles, hidden singles, pointing pairs and box-line reduction — explained with examples. No guessing needed.
5 Mental Math Tricks That Actually Speed You Up
Five arithmetic shortcuts you can start using today — multiplying by 9 and 11, squaring numbers ending in 5, and more — plus games to drill each one.