Subjective difficulty level of Solitaire

Just before I start, I've added a load of fan variants.

This is very much a personal solitaire site, and as I add each game I play it for a while. As with all Solitaire players, there are some types of Solitaire that I prefer more than others, and these I return too.

In general, I prefer games that are a bit challenging, take some time and are winnable (by me) fairly regularly.

I am also an appalling Solitaire player.

This lead me to add my own subjective rating system depending on how difficult that each game appears (to me).

This might or might not be helpful to others ...