The target light array pattern is composed of several light array patterns according to the rule of “turn off for even count and turn on for odd count"; 3. There’re 36 or 56 light array images are fixed in the answer area; 4. You need to find the right pictures so that it can successfully combine the target pattern through the rules, you can challenge the success. -------------- We appreciate any feedback you may have and will apply it to future updates and features. With your continued support we'll do our best to turn out quality Apps.