Let's try to guess secret numbers. You get hint 'Hit' or 'Ball' by searching result. HIT: Correct Number and Correct Position. BALL: Correct Number and Wrong Position. Example +". Case1, secret numbers is 2795. 1st try '1234' - 1BALL. Include number '2'. 2nd try '2700' - 2HIT. Include '2' and '7', and Correct Posision. 3rd try '2759' - 2HIT 2BALL. A little more!