Best Brain Teasing Game. Use move left or move right options where correct digits in your answer moves left or right by one digit in each step. Its a tough job here for your brain ang demands a powerful concentration. Practice session is also available in this game. By pressing Esc key Correct answer is displayed at bottom of the screen. Now type something on keyboard and observe them. Observe their colors and how they change in each of your steps. Imagine the right answer in your next step. Check with the answer that is displayed at bottom and observe why and how colors are displayed.