board change

board.py

@@ -18,7 +18,7 @@ class Board:
             for col in range(cols):
                 cube_rect = pygame.Rect(row * size, col * size, size, size)
 
-                if (row + col) % 2 == 0:
+                if (row) % 2 == 0:
                     win.blit(self.grass, cube_rect)
                 else:
                     win.blit(self.dirt, cube_rect)