This book consists of 75 utterly original and totally tantalizing brain teasers from master puzzler George J. Summers. He brings out fascinating challenges in situations as common as a game of tic-tac-toe or tennis, or as strange as a land of habitual Truthtellers and Liars. These puzzles and teasers are constructed with clues, helpful solution and detailed answers that show you step-by-step how a teaser or a puzzle is unravelled.