Every options trader has heard the term "Max Pain" — the strike price at which the maximum number of option contracts expire worthless, inflicting the greatest loss on option buyers. Few understand how it actually works, how to compute it, and how to read it as a real-time map of where the market wants to settle on expiry. In Options Max Pain Theory, Amit Ghosh, founder of Unofficed, walks step-by-step through the Max Pain calculation using Indian options chain data — Nifty, Bank Nifty, and stock options — and shows how to extract trading edges from the daily intraday and weekly expiry behaviour of the market. The book covers the mechanics: how option writer positions create gravitational pull around the Max Pain strike, how Open Interest and premium decay around expiry converge to that level, and why most expiries close within a tight band of it. With worked examples, screenshots from live option chains, and pattern recognition for trending vs range-bound expiries, this is a practical playbook for option sellers, intraday traders, and anyone who wants to use the options chain as a forward-looking trading tool rather than a wall of static numbers. Designed for intermediate traders comfortable with basic options terminology, it bridges quant theory with Indian market practice — terse, illustrated, and honest about when Max Pain works and when it lies.