Classic
Sudoku Variants
Classic Sudoku
Classic Sudoku is the most popular form of sudoku. Fill the grid so that each number appears exactly once…
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Classic
Cell Coloring
Hitori
Make sure no number repeats among the white cells in any row or column, no black cells share a…
Puzzle Type
Non-Consecutive Sudoku
Non-Consecutive Sudoku adds an extra challenge to the classic puzzle. Follow the standard Sudoku rules, but make sure that…
Cell Coloring
Nonograms
Nonograms are picture-forming logic puzzles in which numerical clues reveal which cells must be filled and which must remain…
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