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All the information you need to solve the mystery is in the puzzle story; everything needed to deduce, reason and organize your thoughts is in the handy grid below. Solving Grid Perplexors is a step-by-step process that keeps your thinking linear and focused. Great additions to our bestselling Perplexors brain teaser collection, these puzzles are great practice for standardized tests that reward logic skills. Paperback; 50 puzzles on 56 pages.