Level 1
Beginner.
~2 min50 givens
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New to sudoku? Learn the rules and try a guided mini-puzzle. Five minutes.
Start at the University →🔒 Archive · Unlocks at 2,500 fuel cells
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Earn fuel cells by solving puzzles across the site. The archive opens at 2,500 lifetime cells and stays open forever.
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Same puzzle, six ways to attack itMore sudoku variants
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Killer Sudoku
Sudoku with arithmetic cages
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Mini
6×6 grid · ~2 min
soon
Hyper
Extra diagonal regions
soon
Samurai
Five overlapping grids
Holiday sudoku.
By the seasonThe graded 9×9, dressed for the calendar — print a stack for the party or the classroom. Three card styles per holiday, answer key included.
Themed sudoku.
By the occasionA styled card for the days that aren’t holidays — a birthday at the table, the first week back at school.