on the line

left mouse click - choose one of the five (bottom left)

click again on the field to place the chosen pentagram

when pentagram is held, use Q and E to rotate

(check that the keyboard layout is English)

when connecting two pentagrams in corner:

  if color the same: 

     score+=1

  else:

      score-= 1

      previous deletes

when one of five is expired without placement:

    point-=2