LONG-STANDING readers will recall the Enigma puzzles, which were published in Â鶹´«Ã½ each week until the end of 2013. The 1780th and last was entitled “Pure hedronism”, and was written by compiler Bob Walker. Sadly, Bob died in February, aged 91.
For him, puzzles and problems were a lifelong passion. Inspired by everyday objects, games and a sound understanding of logic and mathematics, he was one of Enigma’s most prolific compilers.
Bob studied mechanical, electrical and electronics engineering, as well as mathematics and physics. He became an electronic engineer in the British Fleet Air Arm, which led to many…
