Operator script (click here to toggle)

The test is passed if:

• The bottom left hand corners of the first row of black squares are equal distance apart along the x axis and are centered inside the blue squares.
• The bottom left hand corners of the first row of black squares are equal distance apart along the x and y axis and are centered inside the blue squares.
• The bottom left hand corners of the first row of black squares are same distance apart in the x axis as the first row of squares and are same distance apart in the y axis as the second row of squares.