Poker is a game of math, but not everybody thinks math is a game. Doug Hull set out to change that with Poker Work Book for Math Geeks, a “Sudoku book for poker” that presents the reader with a bevy of poker-specific mathematical exercises to flex their gray matter.

If you’re already geeked out on poker math, Doug’s book will be a blast. But if, like many players, you’re daunted by the complexity and challenge of doing math away from the table — let alone in real time during a game — he’s made this infographic to disavow you of any notion that poker math needs to be a burden. In fact, as you’ll see below, there are a number of handy shortcuts that Hull uses and has innovated upon to vastly simplify the math you need to do in your head before making a decision in a live game.

When it comes to poker math, winning players follow the “ABC” rule: Always Be Calculating. This infographic will give you the tools to start processing poker math at the table more quickly, intuitively and confidently.