When Canadian doctor Samuel Bean lost his first two wives, Henrietta and Susanna, within 20 months of each other, he decided that the was best way to honor them would be to create a tombstone dedicated to a hobby they both enjoyed —solving puzzles. The doctor had them buried side by side in Rushes Cemetery near Crosshill, Wellesley Township, Ontario, and a single gravestone was placed over their graves. The gravestone bore a puzzle, one that had kept historians stumped and amateur cryptologists busy for the next eighty years.

A replica of the gravestone can still be seen in Rushes Cemetery. The original stone was badly weathered and was replaced with this durable granite replica in 1982. The stone is about 3 feet high, and features a finger pointed skyward with the words “Gone Home” above the two women’s names. Underneath the names is a grid carved with 225 seemingly random numbers and letters.