One Color Space电脑版

Brand new logic puzzle. This isn't any imitation or modification of existing games.This game has very simple rules. Just color all the blocks in one color.Principle : Every time when you choose a block, the color changes.Rules : First step: choose one block Others steps : Now, you can only choose max. four adjacent block for next move End game : when are all blocks colored in same colorLooks simple. Prove it!!!