GTO

Game Theory Optimal (GTO) strategy is the theoretical gold standard in modern poker. Rooted in Nash equilibrium concepts, a GTO strategy makes you unexploitable: no matter what your opponent does, they cannot gain an edge against your balanced approach. In preflop play, GTO manifests as carefully constructed ranges for every position and action. These ranges include precise percentages of value hands and bluffs so that opponents cannot profit by over-folding or over-calling. For example, a GTO 3-bet range from the Big Blind facing a Button open contains a mix of premium hands (for value) and suited wheel aces or suited connectors (as bluffs), at frequencies that keep the Button indifferent between calling and folding their borderline hands. The practical reality is that pure GTO play is extraordinarily complex and humans cannot execute it perfectly. However, understanding GTO principles provides a strong baseline from which to deviate when exploiting weaker opponents. If you know the GTO play in a spot, you can identify when opponents deviate and adjust accordingly. For instance, if an opponent folds too much to 3-bets, you know to 3-bet bluff more often (an exploitative adjustment away from GTO). In MTTs, GTO is further complicated by ICM, which changes the value of chips at different stages. A pure chip-EV GTO solution differs from an ICM-adjusted GTO solution, and the best tournament players blend both depending on the situation. Modern solver software has made GTO study accessible, and understanding solver outputs is now a core skill for serious tournament players.