by Philip Kiefer · ISBN 4050847044466
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«Problemas de lógica. El hermano William y la puerta secreta del saber» is the puzzle book by Philip Kiefer, published by NGV in Spanish.
In the Middle Ages, Brother William seeks the secret door to knowledge. The volume brings together 120 riddles, problems and logic puzzles of varying difficulty, with an approach suitable for all levels.
Suitable for readers who want to exercise logic with riddles and puzzles set in the Middle Ages.
