LISUtex Apps

Light Up is a logic puzzle with simplerulesand challenging solutions.Light Up is played on a rectangular grid. The grid has bothblackcells and white cells in it. The objective is to place lightbulbson the grid so that every white square is lit. A cell isilluminatedby a light bulb if they're in the same row or column,and if thereare no black cells between them. Also, no light bulbmay illuminateanother light bulb.Some of the black cells have numbers in them. A number in ablackcell indicates how many light bulbs share an edge withthatcell.