How many boxes can you check in 20 seconds? Try it here.
1st try: 46
2nd try: 50
3rd try: 51
Then I stopped improving, but got 54 later on. I can’t seem to do it any better than that. How about you?
1st try: 49
2nd try: 54
3rd try: 54 (again)
Can’t seem to beat that one either ^^