The brain game Faces A was first written by the author on August 1–13, 2025, and then its rules were edited and finalized on June 13–20, 2026, and written as an official article. This brain game is designed based on the power of the mind and thinking, so that two players who move the pieces test each other's memory and problem-solving ability by using thinking while moving the pieces. The game is played on a diamond-shaped board consisting of 196 small diamonds, which are played by a set of pieces by each of the two players who rotate the pieces. Each of the pieces must make specific movements relative to each other on the game board. This brain game is not based on knocking down the opponent's pieces and checking and checking the opponent's king. Rather, it is based on placing the pieces in the 4 corners of the diamond-shaped game board and scoring points from the 4 corners mentioned.