If using hexadecimal notation:
How to Play 16x16 Sudoku. To solve a 16x16 Sudoku puzzle, you must fill in all 256 cells using the characters 1, 2, 3, 4, 5, 6, 7, Sudoku Bliss Free Printable 16x16 Sudoku Puzzles
That means to fill, compared to just 81 in a classic Sudoku. Puzzles range from “gentle” (around 110–130 given clues) to “diabolical” (70–90 clues), with empty spaces that demand careful cross-referencing.
The Ultimate Guide to Hexadoku: Free 16x16 Sudoku Puzzles to Print and Solve hexadoku 16x16 sudoku puzzles to print
Every column must contain all 16 unique symbols without repetition.
To get the best experience when printing 16x16 Sudoku puzzles at home, follow these formatting tips:
Note: Because 16×16 puzzles are large, full solved grids are provided compactly using the symbol order 1–9 A–G. Each solution row is 16 symbols without separators. If using hexadecimal notation: How to Play 16x16 Sudoku
Happy solving! ✏️🧩
This increase in size requires a corresponding leap in logic and patience. What might be a simple deduction on a 9x9 grid becomes a multi-step logical process on a 16x16 grid, making Hexadoku the perfect choice for puzzle veterans seeking a new and rewarding challenge.
If you’ve mastered classic 9×9 Sudoku and crave a deeper, more immersive logic challenge, is your next frontier. Also known as 16×16 Sudoku or Sudoku 16 , this oversized variant replaces digits 1–9 with the hexadecimal characters 0–9 and A–F (or 1–16). The result? A massive, satisfying grid that tests your pattern recognition and patience like nothing else. The Ultimate Guide to Hexadoku: Free 16x16 Sudoku
The name "Hexadoku" comes from "hexadecimal," which is the base-16 numbering system used in computer science. The Rules of Hexadoku
The core logic remains identical to standard Sudoku. Every puzzle has a single unique solution, which you solve using pure deduction. You must fill the grid so that:
While online puzzles are convenient, many enthusiasts prefer printing Hexadoku puzzles for several reasons: