This cache has been placed in honour of my first FTF back on
April 8, 2005 on Geofella's Crossnumber
cache.
I hope you enjoy solving this puzzle as much as I enjoyed creating
it. 
Additional Information:
1) Each square in the crossnumber grid contains a single digit.
2) None of the squares contain a zero.
3) Different letters do not necessarily represent different
digits.
4) The two missing clues are not required to solve the puzzle.
5) There is only one correct solution.
The actual coordinates of the cache are N43 51.pqr W79
05.stu, where
p = (F + G) - (D x F)
q = (E + H) - (A + D)
r = (A x C) - (D x E)
s = (C x F) - (A x B)
t = (G + H) - (C + D)
u = (B x C) - (A + G)
This puzzle's purpose is to challenge those twisted
individuals (such as myself) that find amusement in solving such
things. It is not meant as a roadblock to make the finding of this
cache an exclusive event. If you are unable or unwilling to solve
the puzzle yourself, please feel free to ask someone that has
solved the puzzle to provide you with the actual coordinates. Just
remember to give the appropriate credit in your log entry.