The Adventures of Tom Sawyer
Mark Twain's summer of whitewash, treasure and a graveyard at midnight.
125 cryptograms drawn from it, every one by Mark Twain.
How hard they are
37 easy, 54 medium and 34 hard, graded by the model described in our guide to solving cryptograms.
They average 71.5 letters over 19 distinct ones, with 4.1 letters appearing exactly once.