Coloured Sudoku (without numbers)
Online sudoku game without numbers, with colours instead of numbers. There are nine different colours, instead of numbers from 1 to 9. You have to place the colours in the puzzle so that they do not match in rows and columns, and at the same time there are all 9 colours in each sub-square of the sudoku. A sudoku without numbers, with symbols, in this case with different colours.