Choose a hexadoku 16x16 sudoku puzzle to play online
3,000  16x16 puzzles to choose from



Play a 16x16 puzzle at random:


Select a level and a 16x16 puzzle from 1 to 1000:

Level: Number:

The higher the puzzle number, the more difficult the solution.



Rules:

The hexadoku is 16 X 16 squares instead of 9 X 9 squares. The solving techniques are identical to those of a classic sudoku.

To reduce the size of the grid on the screen and to facilitate entering values, the possibilities are represented here by the following hexadecimal digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F.

The hexadecimal system is a numeral system with a base of 16, using Arabic numerals to represent values 0-9 and the letters A-F for the other six. The hexadecimal is especially useful in computer science because it is much easier to map binary to hexadecimal than to decimal.



Browser:

We recommend you try Google Chrome, for its speed and its various features are very welcome when it comes to solving puzzles of 256 squares.



Directions:

• Puzzles "Beginner" are fully soluble by "Inclusion".
• Puzzles "Confirmed" are fully soluble by "Inclusion" and "Exclusion" while admitting other methods.
• Puzzles "Expert" are soluble with "Inclusion", "Exclusion, and "Multiple Choice". These puzzles do not require more than one hypothesis by multiple choice.
By hypothesis we mean a supposition about the solution of a square in the absence of any logical reasoning.

For more information see: General help.


 Recommend this 
on Google