Chess board and squares

pascal rocaHow many squares do you see on this picture ?

  • Obviously 64 of size 1
  • 1 of size 8
  • Horizontally from top left corner or from top right corner, you can build a side of length 7. Identically it could be done vertically, meaning that 4 squares of length 7 are fitting in the chess board
  • Same reasoning applies to the other size

    Finally the number of squares fitting in a chess board is :  chessBoardSquaresFormula