2 player password cracking battle game, cultivate logical reasoning and analysis ability, social level, hand-eye coordination, and strategic thinking ability. This game requires 2 player at the same time, including the designer and the decipherer of the password, design a set of passwords and then cover the password, and the decipherer begins to decrypt. For each attempt of the decipherer, the designer should give corresponding prompts, and the decipherer will switch roles after obtaining the correct password after digital cracking. Black pegs represent the correct color and position of a chess piece; white pegs indicate that a chess piece has the correct color but is placed in the wrong position. Small size for children's easy grasp, carefully polished, rounded corners do not hurt kids hands.