Mathematician:Henry Ernest Dudeney

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English author and self-taught mathematician who specialised in logic puzzles and mathematical games.

Considered one of Britain's foremost creators of mathematical puzzles.

Known for his collaborations with Sam Loyd.




  • Born: 10 April 1857 in Mayfield, Sussex, England
  • Died: 24 April 1930 in Lewes, Sussex, England

Theorems and Definitions

Results named for Henry Ernest Dudeney can be found here.

Definitions of concepts named for Henry Ernest Dudeney can be found here.



  • A Puzzle-Mine (undated, posthumous)

  • Many contributions

As editor

Notable Quotes

The fact is that our lives are largely spent in solving puzzles; for what is a puzzle but a perplexing question? And from our childhood upwards we are perpetually asking questions or trying to answer them.

Also known as

Henry Ernest Dudeney is more commonly referred to as Harry Dudeney.

Published his earliest work under the alias Sphinx.

Linguistic Note

The name Dudeney is pronounced Dude-nee.