In celebration of GeocoinFest Twin Cities, a group of 111 geocachers asked Groundspeak for permission to set up some new geocaches on land they owned, including some new virtuals and webcams. It so happens that these 111 geocachers owned 111 plots of land which altogether made up an area 2.4 miles by 1.4 miles. Each plot of land (outlined in thick black lines below) was owned by a different geocacher, and all boundaries were strictly North-South or East-West. It also so happened that each plot was made up of an integral number of cells of .1 mile by .1 mile. Groundspeak was very reluctant to break its rules about no new virts or webcams, but did agree as long as the new cache placements would follow these rules:
1 No plot could contain a virtual cache unless it also contained a traditional cache.
2 Each Earthcache must be at least .41 miles away from any Earthcache due North, South, East or West of it.
3 Each CITO cache must be at least .71 miles away from CITO cache due N, S, E, or W of it.
4 No plot could contain a letterbox cache unless it also contained an Earthcache.
5 Each Webcam cache must be at least .31 miles away from any Webcam cache due N, S, E, or W of it.
6 No caches other than CITO, Regular Event, Letterbox, Earthcache, Webcam, Virtual, or Traditional would be allowed.
7 No plot could contain a CITO unless it also contained a regular Event cache.
8 No two caches of any kind could have identical coordinates.
9 Each Traditional cache must be at least .11 miles away from any Traditional cache due N, S, E, or W of it.
10 Each Letterbox cache must be at least .51 miles away from any Letterbox cache due N, S, E, or W of it.
11 No plot could contain a Webcam cache unless it also contained a Virtual cache.
12 Each cache must be located at the exact center of the cell it is in.
13 No plot could contain a regular Event cache unless it also contained a Letterbox cache.
14 Each Virtual cache must be at least .21 miles away from any Virtual cache due N, S, E, or W of it.
15 No plot may contain an Earthcache unless it also contains a Webcam cache.
16 Each regular Event cache must be at least .61 miles away from any regular Event cache due N, S, E, or W of it.
17 Caches are allowed to be .1 mile away from another as long as all other rules above are followed.
18 No single plot may contain more than one cache of a given type.
Luckily, there were no other caches near enough to this rectangle of land to interfere with these rules, and the 111 geocachers were able to cooperate and place 336 new caches in there.
(Yes, I know the curvature of the Earth would mean that the centers of the cells are not truly 528 ft from one another, and that you're unlikely to have to have geologically significant items right where they are required, and about 100 other things are wrong. It's a puzzle, dang it, not an actual scenario.)
Cache location: N45 0(C9). (2*T11)(G10)(E12) W 093 1(X12).(E1+B1)(A9)(C1)
Note: Use the ones digit if you get an amount over nine. The rule numbers have nothing to do with solving the puzzle/coordinates. Also, although at the present time there is discussion about Groundspeak bringing back Virtuals in some form, I'm pretty sure the subject of Webcam caches is dead.
You can check your answers for this puzzle on Geochecker.com.