Curious Cheetah
Akari
Background
This puzzle appears to be a Nikoli original.
Puzzle and Goal
An unsolved puzzle consists of a rectangular (typically square) grid. Some of the cells have been blackened, and some of <em>those</em> cells contain digits from 0 to 4.
The goal is to place virtual light bulbs in some of the cells to satisfy the clues.
Rules
The solved grid must satisfy the following conditions:
Each white cell is lit up by at least one light bulb; that is, each white cell is in the same rank as a light bulb, with no intervening blackened cells.
No light bulb is lit up by another one.
The numbered clues indicate the number of orthogonal neighbors containing light bulbs.
Other Names
Beleuchtung; Bijutsukan; Galerie; Gebäudesicherung; Gebäudeüberwachung; Light Up