HOW TO PLAY THE CHALLENGE:

Scavenge six downtown neighborhoods on foot and nose-first, in a quest to collect and describe 20 scratch-and-sniff playing cards infused with location-specific scents. "Nothing stinks," insists Tolaas. "Only thinking makes it so!"

TO BEGIN:

  1. Select any of the six Main Posts displayed on the map to start.
  2. Each Main Post designates between one and six Outposts within walking distance. Choosing any route and any sequence, collect one card from each Outpost.
  3. For bonus points, note the area's smells on the back of your card. Spoiled butter? Your grandparents' attic? Dogs' ears and Scotch tape? You tell us!
  4. For bonus bonus points, snap photos of sights that inspire you at each stop along the way.
  5. Once you've collected a card from each Outpost, advance to the next Main Post. (If you lose this map, find more at Grand Arts, online at www.grandarts.com, or via the SmellScape mobile app.)
  6. Continue sniffing out smell cards until you've collected the complete set. Game ends Oct. 31, 2012.

SCORING:

Score points by collecting cards, describing smells and contributing photos. The more Main Posts and Outposts you visit, the higher your score - so get creative and get moving.

COME BACK AND SMELL US SOMETIME!

To determine scores at any point during the game, bring your smell cards, descriptions and photos to Grand Arts. We'll help tally your current score and - if you wish - upload your status to the digital version of the game.

ATTENTION, SOCIAL SMELLERS: DOWNLOAD OUR APP:

SmellScape mobile app users can update scores automatically by "checking in" to Outposts and uploading descriptions on the spot. App users can also access leader boards, upload photos, receive smell alerts from Sissel and tag discoveries on Facebook.

(To be clear: The SmellScape mobile app, while elegant and impressive, is not required in order to play the game!)

REMINDER: USE YOUR NOSE AND YOUR BRAIN.

Grand Arts reminds SmellScape players to stay alert and take standard safety precautions. Use designated crosswalks when possible and report suspicious activities.