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Sudoku & sifferpussel
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""Deals in a very entertaining way with problems in normal life related to mathematics, luck, coincidence, gambling."" ? The Independent (London)Why do your chances of winning the …
A walk through history's most mind-boggling puzzlesEver since the Sphinx asked his legendary riddle of Oedipus, riddles, conundrums, and puzzles of all sizes have kept humankind …
The great discovery that no one wanted to make It's the dawn of the Industrial Revolution, and Euclidean geometry has been profoundly influential for centuries. One mystery …