If a light is on, it must be toggled an odd number of times to be turned off. The goal of the puzzle is to switch all the lights off, preferably in as few button presses as possible. Pressing any of the lights will toggle it and the four adjacent lights. When the game starts, a random number or a stored pattern of these lights is switched on. The game consists of a 5 by 5 grid of lights.

Lights to toggle to turn off a fully-lit 5×5 board Tiger Toys also produced a cartridge version of Lights Out for its Game com handheld game console in 1997, shipped free with the console.Ī number of new puzzles similar to Lights Out have been released, such as Lights Out 2000 (5×5 with multiple colors), Lights Out Cube (six 3×3 faces with effects across edges), and Lights Out Deluxe (6×6). Another similar game was produced by Vulcan Electronics in 1983 under the name XL-25. Merlin, a similar electronic game, was released by Parker Brothers in the 1970s with similar rules on a 3 by 3 grid. The goal of the puzzle is to switch all the lights off, preferably with as few button presses as possible. Pressing any of the lights will toggle it and the adjacent lights. Lights Out is an electronic game released by Tiger Electronics in 1995. The difficulty is that when you click on any square, in addition to its state, it changes the state of its adjacent squares.Selecting a square changes it and the surrounding squares.

The game became popular when it was marketed under the name of Lights Out. In this GeoGebra book you can play and solve different logical problems, all based on the idea of 'turning off' all the squares of a totally or partially illuminated board. This GeoGebra book belongs to a group of books (in Spanish) about games and puzzles:

Download 3x3 lights out