Puzzle 6

Time to reset the difficulty. This one should be quite easy.

Don't be put off by the length - it's easier than it looks!

Guvf vf na rknzcyr bs EBG guvegrra. Vg vf
hfhnyyl glcrq jvgu ahzoref, ohg V nibvqrq guvf gb xrrc guvatf nf
grkg.

EBG guvegrra vf n gevivny Pnrfne Fuvsg. Vg vf dhvgr bsgra hfrq nf
'fcbvyre cebgrpgvba' va hfrarg arjftebhcf.

Sbe rknzcyr, vs V unq whfg frra n svyz gung V jnagrq gb qvfphff
ba n arjftebhc, ohg abg rirelbar gurer jvyy unir frra vg, V
jbhyq nccyl EBG guvegrra gb zl cbfgf. Rnpu yrggre vf fuvsgrq
guvegrra cynprf, fb N orpbzrf A, O orpbzrf B naq fb ba.

Jr fubhyq frr gung nccylvat EBG guvegrra ntnva oevatf hf onpx
jurer jr fgnegrq. N pynffvp rknzcyr juvpu qrzbafgengrf gung
nccylvat n zbabnycunorgvp fhofgvghgvbaf znal gvzrf bire qbre abg
vapernfr frphevgl!

Znal cvrprf bs fbsgjner sbe hfrarg unir n EBG guvegrra shapgvba
ohvyg va.

I plan to gradually ramp up the difficulty for a while then reset to a low level before ramping up again, in this way the puzzles will offer something to all.

Please don't spoil the puzzle by posting a solution. Post help, by all means - but be circumspect.

A solution will appear in one week.