A = number of letters E in puzzle N.1

B = number of letters F in puzzle N.2

C = number of letters R in puzzle N.3

D = number of letters O in puzzle N.4

E = SUM(number of letters S+2) in puzzle N.5

F = number of letters O in puzzle N.6

G = number of letters L in puzzle N.7

H = SUM(number of letters E+1) in puzzle N.8

After 23.00 be careful! But better don't seek yet.
You can check your answers for this puzzle on Geochecker.com.