There are various plug-ins you can use - either VeloViewer or Squadrats integrate into the usual route plotting apps to show tiles already bagged and highlight new ones on routes you are plotting. I use Strava.
Quiptic is definitely in the goldilocks zone (or at least intended to be - sometimes the Monday cryptic actually turns out easier). Everyman is another option.
With my pedant's hat on, it's not a patent, it's a patent application. Turns out none of those claims were granted so couldn't have been used to block anyone else from doing what was claimed.
Me too, but fortunately persisted (with several clues). Also blanked today until it suddenly clicked. First two I've really struggled with. Funny how you just don't get some clues.
There are various plug-ins you can use - either VeloViewer or Squadrats integrate into the usual route plotting apps to show tiles already bagged and highlight new ones on routes you are plotting. I use Strava.