Solution to 6: Sandford Fleming Building

    This is a Bridges logic puzzle, also known as Hashiwokakero. Its rules are simple: connect all the circles by drawing either one or two lines ("bridges") between horizontally or vertically adjacent circles. The number of bridges leaving from a circle should equal the number inside the circle, and one must be able to get from any circle to any other circle by travelling along the bridges.

    

    Having solved the Bridges puzzle, if you focus only on the double lines, you'll see that they form the word "GAIN".
    


    

GAIN