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Learn GTO preflop strategy

Solved preflop strategy, from the fundamentals up. Every piece names the conditions it was solved for, because a chart without its assumptions is an answer without a question.

Reference

Simple Preflop guide

How to open and navigate your range files in the Simple Preflop solver.

Glossary

Plain definitions for the preflop and solver vocabulary used across the library.

Fundamentals

What solved preflop strategy is and how to read it.

All fundamentals (5)

Fundamentals

Aug 11, 2026

GTO Preflop Hands by Position: What to Play

Which hands to play preflop, from every seat and against every action. How position, stack depth, and the action in front of you decide raise, call, or fold.

Fundamentals

Aug 7, 2026

What Is GTO Poker? A Straight Answer

GTO poker means playing a strategy no opponent can exploit. Learn what that means in practice, where it comes from, and when to use it.

Fundamentals

Mar 17, 2026

Preflop Charts vs. Ranges: The Difference

A preflop chart and a solved range are not the same thing. Learn how static charts differ from full solved ranges, and why the hidden assumptions matter.

Fundamentals

Feb 18, 2026

How to Read a Preflop Chart: the Hand Grid

Learn to read a preflop poker chart: how the hand grid is laid out, where pairs, suited, and offsuit hands live, and what a mixed-frequency cell means.

Fundamentals

Jan 14, 2026

GTO Preflop Ranges Explained

What GTO preflop ranges actually are, why solve accuracy and coverage matter, and how to use solved ranges for cash, tournaments, and Spin & Go.

Preflop spots

Opening, three-betting, squeezing, and defending, spot by spot.

All preflop spots (6)

Preflop spots

Jul 31, 2026

Big Blind Defense: Cash Games vs. Tournaments

Defending the big blind is not one skill. A raked cash game asks you to defend tighter and 3-bet more; an ante-heavy tournament wants you wider.

Preflop spots

Jul 21, 2026

Squeeze Ranges Preflop: Position and Stack

Squeezing over an open and a caller is not a normal 3-bet. Learn how dead money widens the range and why sizing grows with each caller.

Preflop spots

Jul 17, 2026

3-Bet Ranges 100bb Cash: Value and Bluffs

How a solved 100bb cash 3-bet range balances value and bluffs, why blockers pick the bluffs, and how IP and OOP sizing differ.

Preflop spots

Jul 14, 2026

6-max Cash 100bb RFI Ranges by Position

How solved 6-max opening ranges widen from UTG to the small blind at 100bb, why each seat opens what it does, and the common over- and under-opening leaks.

Preflop spots

Jun 16, 2026

Preflop Raise Sizing: What the Solve Uses

How stack depth, position, rake, and antes drive preflop raise sizing: open sizes, 3-bet sizing IP vs OOP, and 4-bet sizing.

Preflop spots

May 19, 2026

Blind vs. Blind: SB vs. BB Preflop Ranges

Small blind vs. big blind is the widest, most complex preflop spot. Learn why the SB is at a disadvantage and how solved blind-vs-blind trees handle it.

Stack depth and ICM

Short stacks, push/fold, and what pay jumps do to a range.

All stack depth and icm (3)

Stack depth and ICM

Aug 27, 2026

Short-Stack Push/Fold Charts (10 to 15bb)

Push/fold charts turn 10bb to 15bb poker into solved decisions. What the charts are, why the regime exists, both sides of the jam, and the costliest leaks.

Stack depth and ICM

Aug 4, 2026

ICM and Preflop Ranges Near the Bubble

Near a pay jump, chips are not worth their face value. Learn why chip-EV opens overplay under ICM pressure and how survival tightens your ranges.

Stack depth and ICM

Jul 24, 2026

Short-Stack Poker: the Math of 10bb to 20bb

The 10bb to 20bb zone is where tournaments are won and lost. Learn how postflop play shrinks and when the tree collapses to all-in-or-fold.

Theory

Why the solve says what it says.

All theory (3)

Theory

Sep 7, 2026

Mixed Strategies: One Hand, Two Ways

Why solved preflop ranges play the same hand two ways: indifference at the range boundary, balance, and when simplifying a mix to one action costs you little.

Theory

Sep 3, 2026

Exploitative vs. GTO: When to Leave the Chart

GTO is the unexploitable baseline; exploits buy max EV against real leaks. When to leave the chart preflop, and why deviating without the baseline backfires.

Theory

Jul 10, 2026

How Rake Changes Preflop Ranges

Rake quietly rewrites correct preflop strategy. Learn how higher rake tightens opens and pushes the blinds toward 3-bet-or-fold.

Study and practice

Turning solved output into something you can use at the table.

All study and practice (3)

Study and practice

Aug 31, 2026

How to Study Preflop Ranges Efficiently

Staring at charts is not studying. A concrete preflop training workflow: drill one spot family per session, test by reconstruction, review on a schedule.

Study and practice

Jul 28, 2026

How to Memorize Preflop Ranges

You do not memorize 169 hands per spot by brute force. Group ranges by position, action, and stack, and rebuild one from its bottom boundary.

Study and practice

Apr 14, 2026

Browser Charts or Owned Files: Which to Use

Two ways to study solved preflop ranges: live charts in a browser, or files you own and open offline. What each one is good at, and how to choose.