64 + 49 + 36 + 25 + 16 + 9 + 4 + 1 = 204 squares which is less than 64!

1, 8x8 square 4, 7x7 squares 9, 6x6 squares 16, 5x5 squares 25, 4x4 squares 36, 3x3 squares 49, 2x2 squares 64, 1x1 squares

64 numbers (not necessarily distinct) are placed on the squares of a chessboard such that the sum of the numbers in every 2x2 square is 7.

What is the sum of the four numbers in the corners of the board?

How many squares can be formed in the following image by connecting four points of 8x8 grid?