I got to the mysterious turn 27 situation for the first time, noting how I think I reached that here.
as far as I can tell, I got it by keeping ybj Fpvrapr sbe n juvyr (vqx jul; V tbg Fpvrapr 60 nsgre erprvivat gur eraqrm-ibhf gb trg gb Arhgeny Fcnpr ba ghea 22 sebz gur Abinaf, jvgu Tnynpgvp Eryngvbaf 40 fvapr ghea 4 be fb) + n ivfvg gb gur Nyy-Frrvat Rlr ba Znh (Mbenan jnf ratntrq ng gur gvzr, juvpu vf pyrneyl abg arprffnel gb gur ivfvg, ohg jnfa'g n qrgevzrag rvgure) gb haybpx gur snzbhf Sbhegu Bcgvba jura lbh trg lbhe fpvrapr uvtu rabhtu.
Juvpu va ghea vf rabhtu sbe ghea 27 gb or Vagrerfgvat. V unq Qrprcgvba 75, juvpu sryg fhssvpvrag, ohg orpnhfr V pbhyqa'g trg gb gur Abina eraqrm-ibhf va gvzr gung jnf gung. Jung n jbaqreshy neenl bs greevoyr Onq Raqf jr tbg gurer!