Dykata

Challenge your brain with this simple yet challenging puzzle.

Try to fill each square by following 3 rules. First, in every column place one of each shape and one of each color. Same goes for the rows: 1 of each color and 1 of each shape. Finally, within the entire puzzle, every possible color of every possible shape must be present exactly once. That's it.

It's essentially sudoku with shapes and colors instead of numbers.