How many squares are there on an 8 x 8 chessboard?
If you have not tried to solve it, have a go now. For everyone else the answer is after the break.
There are 8 x 8 individual squares, then 7 x 7 squares made up of 4 squares, then 6 x 6 squares made up of 9 squares, and so on, giving a total of 204 squares. Did you solve it?
I have produced an ebook containing 101 of the previous Friday Puzzles! It is called PUZZLED and is available for the Kindle (UKhere and USA here) and on the iBookstore (UK here in the USA here). You can try 101 of the puzzles for free here.