Hard Difficulty Sudoku Puzzles
6 Sudoku Puzzles Per A4 Sheet of Paper
Puzzles for the Experienced Sudoku Player
Average Time Taken - Less than 30 Minutes
The hard puzzles are much more challenging and are recommended for experienced Sudoku players. These puzzles will have fewer numbers already entered. More advanced techniques will have to be used to complete these puzzles.
To view these puzzles you will need to use Adobe Reader which is free to use.
- 12 Hard Sudoku Puzzles – Book 01
- 12 Hard Sudoku Puzzles – Book 12
- 12 Hard Sudoku Puzzles – Book 03
- 12 Hard Sudoku Puzzles – Book 04
- 12 Hard Sudoku Puzzles – Book 05
- 12 Hard Sudoku Puzzles – Book 06
- 12 Hard Sudoku Puzzles – Book 07
- 12 Hard Sudoku Puzzles – Book 08
- 12 Hard Sudoku Puzzles – Book 09
- 12 Hard Sudoku Puzzles – Book 10
How To Play Sudoku
Sudoku is a puzzle game that first appeared in the 1970’s, but remained in relative obscurity until the early 2000’s. Since then it’s become a mainstay in newspapers across the world, and spawned dozens of offshoots and variations.
In Sudoku, the player is presented with a board consisting of 81 cells arranged in a 9x9 formation. The board is further broken down into 9 3x3 boxes. The goal of Sudoku is to use the numbers 1-9 in such a way that each row, column, and box has one of each of these digits, and only 1.
Each board comes with several numbers already scattered across the board, which cannot be changed, and set the tone for the entire puzzle.
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