Each time you place that final symbol—often the letter “F” or the number “0” in the last empty cell—you aren’t just finishing a puzzle. You have conquered 256 variables, maintained flawless logic over an hour or more, and exercised your brain to its fullest capacity.
Hexadoku is a supersized variant of Sudoku. The "Hexa" prefix often refers to hexadecimal, as these puzzles typically use the characters (or sometimes 1-16 or A-P) to fill the grid. The Basic Rules:
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In a standard puzzle, you can often use "Hidden Singles" to fill half the grid quickly. In Hexadoku, you may spend 15 minutes just to place three numbers. The satisfaction of finally cracking a difficult region, however, is unmatched. hexadoku 16x16 sudoku puzzles to print
5 2 . . | . B E . | . . . . | . 0 . . . E . 4 | . . . . | 9 . . 3 | 7 C 1 6 . . . . | . . 1 . | 2 . . 8 | . . . . C . 6 7 | . . . 3 | E . . 4 | . . . . --------+---------+---------+-------- . . . . | 4 . 0 . | . 6 . . | 9 . . . . . 7 1 | . . . 9 | . . . E | . . C 8 . . 3 9 | 7 . B 1 | . . . 2 | E D 0 . . 0 4 . | . F . 2 | . A . . | . . . . --------+---------+---------+-------- . . . . | E . A 0 | D 7 1 . | . . F . . F . . | . . . . | . . 2 . | . 4 . . . . E . | . . 6 . | . . . . | B . D 1 . D . B | 9 . . 5 | . . E . | . . . . --------+---------+---------+-------- 1 4 B D | . . . . | . E . A | . . 7 . . 3 . . | . . . 6 | 8 . 5 . | . . . . 9 8 . F | . 1 4 D | 7 . C . | . . . . . 7 . 6 | . E . . | 4 . B . | . . . . Use code with caution. Copied to clipboard for this piece, or do you need the for the one above? create_hexadoku = base * base (base * (r % base) + r // base + c) % side random.sample(s, len(s)) = range(base) = [g * base + r shuffle(r_base) shuffle(r_base)] = [g * base + c shuffle(r_base) shuffle(r_base)] = shuffle( 0123456789ABCDEF = [[nums[pattern(r, c)] # Empty about 60% of the cells for a "medium" difficulty range(side): range(side): random.random() < : board[r][c] = = create_hexadoku() hexadoku: print( .join(row)) Use code with caution. Copied to clipboard 16x16 Sudoku - Play Online for Free | SudokuBliss.com
with seven difficulty levels, ranging from beginner to expert. The Teachers Corner
: Most printable collections, such as the Hexadoku Volume 1-5 series , range from "Easy" to "Difficult". However, even an "easy" 16x16 puzzle is considerably more taxing than a standard 9x9 due to the sheer volume of data tracking required. Each time you place that final symbol—often the
Because there are more symbols and a much larger area to track, a single puzzle can take anywhere from 30 minutes to several hours to complete. Why Enthusiasts Prefer Printing Hexadoku
Solving Hexadoku puzzles offers several cognitive benefits:
Do you prefer the format, or a simple 1-16 number layout? What difficulty level(Easy, Medium, Hard, or Expert) The "Hexa" prefix often refers to hexadecimal, as
A 16x16 square divided into 4x4 subgrids (also called regions or blocks).
If you’re using a printable puzzle, you can write your pencil marks in the upper part of each cell. Many puzzle sites design their grids with small note‑taking areas for exactly that purpose.