A Tale of Two Cities
Dickens's novel of London, Paris and the Terror.
200 cryptograms drawn from it, every one by Charles Dickens.
How hard they are
59 easy, 81 medium and 60 hard, graded by the model described in our guide to solving cryptograms.
They average 72 letters over 18.9 distinct ones, with 4.2 letters appearing exactly once.