Enter a hexadoku, 16x16 sudoku solution, to solve and play online
with various aids.

Button tip for a square
Button solution for a square
Button solution for the grid
Button verification of the grid
Button printing the grid
Save the grid
Button back to the puzzle
Button reset

Reset the stopwatch.
Start the stopwatch.


A hexadoku is a 16x16 sudoku puzzle 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.

Hexadecimal is a system that uses 16 digits: The numbers from 0 to 9 and the letters from "A" to "F".
Hexadecimal is particularly used in computer science. Indeed the hexadecimal allows easy conversion into binary that uses only two digits: the "0" and the "1".


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.


This page allows you to enter the solution of a 16x16 sudoku grid.

Entering a number with the mouse:

 • Select your box by clicking in this one.
 • Click in one of the numbers of the left column.

Insert a number with the keyboard:

 • Move the cursor with the Tab key or with the four arrow keys.
 • Then type the number or letter in the appropriate box.

Figures in blue are those of the statement and are not modifiable.


The button (Check / resolvability) ensures the consistency of the statement without giving the solution of it.