You like Sudoku? You have to try BrainBrix. The exercises have their own rules: In every comb style group, each digit from 1 to 7 must appear only once. Sounds easy? Yes, but the tricky part: The combs overlap each other. So do not get lost…
The exercises are available in different skill levels and field forms. Try it online on the official website: Train your brain with BrainBrix.
