Head Games; December 2007/January 2008; Scientific American Mind; by American Mensa; 1 Page(s)

Find the longest path from the club symbol in the bottom left corner to the club in the upper right corner, always moving in this order: club, diamond, heart, spade. You may not move diagonally or return to a square through which you have already passed.

Starting at any letter and moving horizontally or vertically one space at a time, find how many different paths spell out the word "brain."