Sometimes you don't feel like playing a full game or are restricted by time and circumstances, add these links to your favorite electronic device and learn some tricks that will enhance your "chess eye" and impress your friends.
Both links below are interactive! Test your skills with immediate feed back of your progress.
Checkmate with a Knight and Bishop. Allow a minute for the link to display the pieces.
The Knight's Tour. GM Koltanowski used to do this blindfolded and jumping from one board to a second and finally to a third board! Not impressed yet? He identified the squares by the words, phone numbers, etc that the audience wrote on them; which he studied for a few minutes, turned his back to the boards and began!