Ascendoku
Learn every sudoku variant.
Ascendoku is a free sudoku game. Start with classic 9×9 and climb to killer cages, thermometers and whisper lines — every new rule taught before you meet it.
No account needed — open a book and play.
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Book OneClassic Sudoku32 puzzles
Book One
Classic Sudoku
Page 1 of 32 · Your First Sudoku
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Daily puzzle
Tuesday, 6 October 2026
Classic · Easy
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