Fundamentals
What is GTO poker?
GTO stands for Game Theory Optimal. It's a strategy that can't be beaten in the long run, no matter what your opponent does. Think of it as the poker equivalent of a chess engine's baseline — a solved answer for every spot, based on math instead of hunches.
Why it matters
Most players lose because they leak — over-limping, folding too much, sizing wrong. GTO gives you a floor: a baseline that stops the bleeding. Once you can play unexploitably, you can start exploiting weaker opponents on purpose, from a position of strength.
Try it: one preflop spot
Cash game. 100bb effective. Blinds 0.5 / 1. It folds to you on the Button. You look down at:
Your hand · BTNPot: 1.5bb
A
♠
♠
A
♠
5
♠
♠
5
♠
Button
What do you do?
That's one hand out of thousands. GT_O drills them 20 at a time until the right answer becomes instinct.