This is a Challenge Cache. The cache is at the posted coordinates, but you must qualify before you can claim a find. To claim a find for this cache, you must have found at least 18 caches of the 81 possible "Multi" type that fill different squares in the Difficulty/Terrain Grid on your Statistics page. There are several access points to this public park. The difficulty and terrain levels are a reflection of the degree of difficulty in finding the caches needed to qualify, not for the degree of difficulty of finding this cache.
Background
One of the oldest types of geocaching challenges is to complete the difficulty/terrain (D/T) grid displayed on your Statistics page. The D/T grid is often referred to as the Fizzy grid after the first challenge of this type, GC11E8N in California. Other local Saskatoon area variations of that challenge are:
Nimakrit's Evil Challenge - Mwahaha, GC1EMAC
Double Fizzy Challenge, GC6TYGR
The Traditional D/T Grid - Challenge, GC6K7H8
FFV Challenge of Challenges, GC58XJB
This is an easier variant of those challenges.
The Challenge
To claim the find for this cache, you merely need to fill ANY 18 of the 81 possible D/T squares using only the "Multi" type caches. You may run the Challenge Checker to be sure. To show that you do indeed qualify, you must attach either a copy of the results of your Challenge Checker Query, or a listing of your qualifying finds.
Any "Found It" logs without the required proof of qualification will be deleted without notice. A "write note" log may be utilized for those who find it prior to qualifying, or as an interim measure for those who wish to log it prior to attaching the required qualification information. You'll need to bring your own pen or pencil, and probably another tool of the trade.