The icon ( Check / resolvability ) allows you to verify the coherence of the puzzle without actually solving it for you. Type the numeral in the square chosen.

You can move the cursor using the four arrow keys as well as using the TAB key.Then click once on one of the numbers on the column on the left.

Place the cursor and click once on the square of choice.We recommend that you use Google Chrome because it's fast and easy to use when solving puzzles having 256 squares as well as for receiving different solutions and hints sent by the server. This page allows you to enter your own puzzle. The hexadecimal system is useful in computer science because it is easier to map the hexadecimal system to the binary than the decimal system. The hexadecimal system is a numeral system with a base of 16, using Arabic numerals to represent the first ten numbers (0-9) and the letters A-F for the other six digits. In order to save screen space and to simplify entry, the 16 possible numbers are symbolized here by the following hexadecimal digits: 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F.

All symbolic distinctions: symbols, letters, numbers, shapes, colors can be applied without changing the rules of the game. There is no mathematical relation between squares. In a Sudoku as in a hexadoku, the numbers are used for conventional purposes only. The hexadoku is a 16x16 grid whereby the rules for solving the puzzle are the same as those for solving a 9x9 sudoku grid.

Free printable sudoku 16x16