The game Matrix Nine develops attention, memory, logical thinking, and helps to master math operations.

On each of the game cards is depicted a scheme of nine fields, located at the corners of four rectangles. Each of the rectangles has a Target sum and a constant digit is contained in the center field.
Players must enter only one digit between 1 and 9 (without the constant digit) in the eight fields on the card so that the sum of the numbers for each of the squares is equal to the corresponding Target sum.

The successful solving of the cards requires patience and concentration.

I wish you a nice game!