Queen vs Rook Endgame

htghghgh

So which is the toughest position with highest DTM and highest DTZ?

hhhhhhhhhhhhhhheeeeeeeeeeeeeeellllllllllloooooooooooooooooooo!!!!!!!!!!!!!!!!!!!!!!!

There is actual "book" about it drive.google.com/file/d/0Bwd3qrHq0s1pbHdMSWFSS2d3QWc/view

And learning all that would be way too much trouble. There are couple things to learn like queen should on diagonal that next to rook and such. But there are really much cases covered...