Secret Recipe: Each hand-selected problem comes with a classification, snapshot, and chili rating. Classification serves to identify each problem according to category or sub-category. Snapshot highlights why that particular problem was chosen, including the underlying problem-solving principle or strategic approach. Chili rating helps candidates gauge the estimated difficulty level of a given problem. A single chili indicates that the estimated difficulty level of a given problem is "mild" (500 to 590 difficulty level), two chilies spell "hot" (600 to 690 difficulty level), and three chilies signal "very hot" (700 or above difficulty level). By practicing with problems of varying levels of difficulty, candidates will learn to maintain discipline when solving easy but tricky problems and also to exercise flexibility when tackling harder problems. These latter problems require that a test-taker choose the best approach and look for time-saving shortcuts.

"I used this book as my main source of study, supplementing it with practice from The Official Guide for GMAT Review. The Official Guide has lots of problems to practice on, but Game Plan is superb for helping understand conceptually how the problems work. I highly recommend this manual as your first line of defense. It helped me achieve a 700-plus GMAT score with only a month's practice, despite English not being my first language." –Sam Mottaghi, former consultant, Accenture; Cambridge Judge Business School graduate