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Kerf Puzzle
Sudoku
Binary
Nonogram
Daily
Kerf Puzzle
Logic puzzles with one solution and no guessing.
Sudoku
Fill the grid with the digits 1 to 9. Four levels, Easy to Expert.
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Binary
Fill the grid with ones and zeros. Four sizes, 6x6 to 12x12.
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Nonogram
Fill cells to match the number clues and reveal a hidden picture.
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Daily puzzles
A new puzzle every day. The level rises through the week, from Easy on Monday to the hardest on Sunday.
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Puzzle books
Logic puzzle books from Kerf Press, in print.
See the books
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