Online Puzzle LightUp
		◆　Rules The objective is to place light bulbs on the grid so that every white square is lit. A cell is illuminated by a light bulb if they're in the same row or column, and if there are no black cells between them. Also, no light bulb may illuminate another light bulb. Some of the black cells have numbers in them. A number in a black cell indicates how many light bulbs share an edge with that cell.
	◆　20 problems for beginners 　　　（Size of a cell 6x6 20problems） ◆　50problems 　 　（Size of a cell 10x10 10problems,18x10 5problems,24x14 23problems,36x20 12problems）

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