Color Sudoku

Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each of the rows, columns and the nine outlined 3x3 regions.

Apply Classic Sudoku rules. Within each coloured region each digit must appear exactly once.

Sudokus that no one can solve

Sudokus that no one can solve, not only including Sudokus which are very difficult but also those that no one has tried to solve.

15 November 2025

数独 | Cool Sudoku | 数独 | Sudoku Puzzle | 賢くなるパズル

Today Sudoku

Classic Sudoku

Samurai Sudoku

Archives

Sudokus with no one can solve

X Sums Sudoku

Classic Sudoku

Little killer sudoku

Extra Regions Sudoku

Makodoku

Sum Frame Sudoku

Group Sum Sudoku

Greater Than Sudoku

Multi Diagonal Sudoku

Clone Sudoku

Skyscrapers Sudoku

Hybrid Sudoku ( X Sums + Consecutive )

Quadruple sudoku

Hybrid Sudoku ( X Sums + Consecutive )

Kropki Sudoku

Hybrid Sudoku ( Consecutive Pairs + Sum Frame )

Consecutive Sudoku

Greater Than Kropki Sudoku

XV Sudoku

Consecutive Sudoku

Exclude Sudoku

Thermo Sudoku

MiniMax Sudoku

XV Sudoku

Count different Sudoku

Hybrid Sudoku ( X Sums + Greater Than )

Color Sudoku

Products Sudoku

Hybrid Sudoku ( Greater Than + Sum Frame )

Maximin Sudoku

Profile

Change password

Color Sudoku

Sudokus that no one can solve