Assorted Sudoku Variations
Free Diagonal or X-Sudokus as well as Even-Odd Sudokus to play online or print out. New puzzles every Wednesday!
Variations
Rules: Enter digits in blank cells so that every row, every column, every 3x3 block and every main diagonal contain all digits from 1 to 9.
All puzzles on this site are created with our own computer program. Every Sudoku has a unique solution and is solvable without guessing.
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Sudoku VariationsSince October 15th we also offer two interesting Sudoku Variants.X-SudokuIn contrast to classic Sudoku puzzles, the two diagonals of an X-Sudoku contain all numbers, too. Other names for this variation are Diagonal Sudoku, Diagonal Number Place, taikakusen nanpure, Sudoku X, Kokonotsu, or Dell's Number Place Challenger.Even-Odd SudokuEven-Odd Sudoku are Sudoku puzzles with colored even (or odd) cells. Sometimes this variante is called Even-Odd Number Place, Odd/Even Sudoku oder Guusuu Kisuu Nanpure.For more information about Sudoku Variations see the article of Ed Pegg Jr. and Instruction booklet (PDF) of the first Sudoku World Championships.
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