Go into fullscreen at any time by pressing the full screen button on the bottom right, and press esc to exit fullscreen. Click your difficulty, and simply click on a number when you need to place a chip, and click on it again if you want to remove the chip! Additionally you can reload the page if you selected the wrong difficulty. 

StatusReleased
PlatformsHTML5
Rating
Rated 5.0 out of 5 stars
(1 total ratings)
Authordjmick254