If you like this type of Solitaire, you may well also enjoy La Belle Lucie (which is similar). La Belle Lucie is much more difficult.
I find Trefoil Patience hard. Somewhere I mention that I prefer Trefoil Solitaire to La Belle Lucie. This is true. However I have since added Demon Fan which I prefer. This is because it is easy.
Ceiling Fan, Demon Fan, Fan Solitaire, La Belle Lucie, Scotch, Trefoil Solitaire.