Henry Ernest Dudeney (1857–1930) was an English author and mathematician who specialised in logic puzzles and mathematical games. He is known as one of the country's foremost creators of puzzles.
Th……続きを見る
For the mastermind who has what it takes to solve the tricky conundrums from Britain's first and greatest puzzle master.
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Solve the puzzle of The Mystery of Ra……続きを見る
