answer
bottom
break
clear up
crack
debug
decipher
decode
disentangle
divine
do
dope
dope out
explain
fathom
figure out
find out
find the answer
find the solution
get
get right
guess
guess right
have it
hit it
interpret
make out
open the lock
plumb
psych
psych out
puzzle out
ravel
ravel out
resolve
riddle
solve
sort out
undo
unlock
unravel
unscramble
untangle
untwist
unweave
work
work out
unriddled
unriddles
unriddling