by Michael Rios · Ediciones Tutor, S.A. · tapa blanda · ISBN 9788479025045
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«Sudoku Mensa» is the sudoku book by Michael Rios, published by Ediciones Tutor in paperback (320 pages, in Spanish).
Collection of official Mensa sudokus, with four difficulty levels: easy, medium, hard and super-hard. Each puzzle is a grid of 81 cells with some clue digits; you must place the numbers 1 to 9 without repeating them in rows, columns or blocks. A book of numerical logic to exercise mental agility.
Mensa, the international association for people with a high intelligence quotient, endorses this edition as the official sudoku book. The paperback edition was published on August 18, 2006.
For fans of numerical puzzles looking for progressive challenges, from accessible levels to sudokus designed for experts.
