Fun and well-thought-out game, and a great addition to the "puzzle books covered in splotches" genre.
Vg frrzf yvxr 4o unf na nzovthvgl. V qrqhprq gung gur gjb pbvaf jvgu B-urnqf ner Q-gnvyf naq R-gnvyf. Va 4n, gur B-urnqf ner va E4P2 naq E5P2, naq gur pbeerfcbaqvat pbbeqvangrf va 4o (E4P4 naq E5P4) pna unir gur Q-gnvyf naq R-gnvyf va rvgure cbfvgvba gb sbez QVA naq DHVIRE. Vf guvf n erny pbbx be qb V unir na reebe fbzrjurer?