The cache is not located at the posted coordinates.
(But... you will definitely want to explore the "neigh"borhood, either in person or virtually.)
Oops! In my hurry to get this puzzle done, I made a typo when entering the cache title. So the answer is not the obvious one: 7 (or maybe 8?), which wouldn't make sense anyway... You will need to change one letter in the title to find the key to solving.
Once you have determined the number for each horsey, just do the following math, and plug the results into the coords:
S=G+C-A
T=D-C
U=E-F
V=B-C
W=(B-C)+(E/D)
X=F-D
Y=B
Z=A-F
Location coords: +38 4S.TUV, -121 1W.XYZ
Prize for FTF: The Thrill of Victory (sorry, I've run out of ideas!)
You can check your answers for this puzzle on Geochecker.com.
Congrats to Roktman for braving wind, rain, cold, dark of night for FTF! (Hey postal workers have nothing on us cachers, right??)