Henry Ernest Dudeney/Puzzles and Curious Problems/104 - Letter-Figure Puzzle/Historical Note
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Historical Note on Puzzles and Curious Problems by Henry Ernest Dudeney: $104$ - Letter-Figure Puzzle
Dudeney attributes this to a correspondent identified as C. E. B., whose identity has not been ascertained.
Sources
- 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Digital Puzzles: $104$. -- Letter-Figure Puzzle
- 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Cryptarithm Puzzles: $159$. Letter-Figure Puzzle