Connect all the light bulbs with each other and also with the main battery. You have to create as many connections to other bulbs as the number indicated on the bulb. Two bulbs can be connected with each other only vertically or horizontally and with no more then 2 connections.
Play Daily Killer Sudoku levels. Fill the grid with the numbers 1 to 9, such that each row, column and box contains each number only once. Additionally, a Killer Sudoku grid is divided into cages, each cage has its own background color. The values of the cells in a cage must sum [...]