Sharpen your sluggish brain with 70 specially commissioned puzzles
and challenges devised by Baker Street's legendary detective.
Sherlock Holmes' famous sidekick and longtime friend, Dr John
Watson, recounts the mental exercises Holmes conceived for him so
that you too can strengthen your facilities for analysis, logic,
reason, arithmetic, creative thought and deduction. These cunning
puzzles have been grouped by their approximate difficulty but as a
wise man once said, 'All questions are hard if you don't know the
answer, and easy if you do.'
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