Sudoku hard puzzles you may like to go through at leisure
Solutions to hard and very hard Sudoku puzzle games are collected together in a comprehensive updated list. It includes level 4 and NY Times Sudoku puzzles.
Each solution includes explanation of each valid digit in an empty cell as well as each breakthrough. The Sudoku hard solution techniques are annexed at the end of many of the solutions.
How to solve Sudoku hard level 4 puzzles
How to solve New York Times Sudoku hard puzzles
How to solve Sudoku hard level 3 puzzles
Medium level 2 puzzles
You may read through all medium level 2 solutions at Second level medium Sudoku.
For beginners, Sudoku beginner puzzle solutions are at Beginner level Sudoku.
The Sudoku games with number of filled digits 23, 22 or less are solved and collected under Expert Sudoku. These are also internally labelled as hard and very hard.