9 x 9 odd square Matrix Magic Square

9×9 Magic Square

Fill the grid so each row, column, and both diagonals sum to 369

Sound:

Rules:

• Use each number from 1 to 81 exactly once
• Each row, column, and both main diagonals must sum to 369
• Click a cell to select it, then type a number (1-81)
• Press Delete/Backspace to clear a cell
• Use arrow keys to navigate between cells