Irodoku: The logic puzzle coloring book - easy (Irodoku blocks of 4 - easy, medium, hard)

Experience the successful and popular logic puzzle Sudoku in a completely new way!. Here you don't play with numbers, instead with colors.You only need 4 colored pencils in the colors red, blue, green and yellow.IRODOKU is not only fun for adults, but also promotes the mental development of children in the areas of learning colors, logical thinking and trains fine motoric skills by coloring the boxes.. The difficulty of this Irodoku is easy.. Rules: Each column, each row and each block must contain all specified colors.Therefore, no column, row, or block may contain two or more cells of the same color.. You can purchase IRODOKU in easy, medium and hard difficulty levels.