Puzzle 1. Count how many perfect squares
of all possible sizes are hidden in the cross of dots on the left. A
square is counting if any four dots are placed exactly in its
Puzzle 2. It is more difficult than previous one. You have to
remove exactly 6 dots so that any four dots from those remaining would
not lie in the corners of a square. So you'll get the "no-squares"
position for which there are no four dots that form a perfect square.