Thanks a lot for the feedback. Yhea you are right for the droping part of the icon. Not sure if it will not cause drag and drop issue if i put the drop zone over all the card but put an highlight on the cell slot is a good idea. I have think of it during the dev and forgot (so much work in so litle time lol). To be honest i got only 1 puzzle on tuesday and i as i work the days it was a bit in rush.