Defending the Open
Defense Room
Read the open. Read the table. Build the response.
26 min
18
Defending the Open
What "Defense Room" teaches
Read the open. Read the table. Build the response.
It sits inside Defending the Open: Learn to defend from every seat — HJ, CO, BTN, SB and BB — building a complete fold/call/3-bet response to an open raise position by position, the same way you built your opening ranges.
What you'll learn
- Defending opens
- Bb defense
- Sb defense
- Btn defense
- Opener range strength
- Pot odds preflop
- Equity realization preflop
- Stack depth defense
- Range construction
- Range adjustment
- Players behind aggression
How the interactive lesson works
The full lesson is 18 steps long. Each step asks you to commit to a decision before the answer is revealed, then explains why the correct line works — the reveal is what makes the concept stick.
Create a free account to play through it and keep your progress, XP and concept mastery.
Start the interactive lesson
The full 18-step version is free to start with a StackedPoker account. Your progress, XP and concept mastery are saved as you go.
Open the lessonFrequently asked questions
What does the "Defense Room" lesson cover?
Read the open. Read the table. Build the response. It runs 18 interactive steps and takes about 26 minutes.
How long does "Defense Room" take?
About 26 minutes across 18 steps. Progress is saved after every step, so the lesson can be finished across several sittings.
Do I need an account to take this lesson?
Yes — the interactive version requires a free StackedPoker account so your progress, XP and concept mastery are saved. This page is the free public overview of what the lesson teaches.
Which module is "Defense Room" part of?
It is part of Defending the Open — I am in the CO. Someone opened. What do I do? Learn every seat's defense, one position at a time.. Learn to defend from every seat — HJ, CO, BTN, SB and BB — building a complete fold/call/3-bet response to an open raise position by position, the same way you built your opening ranges.
Related
Concepts, lessons and tools that build on this page.
- LessonBuild Your Defense RangeStop solving one hand at a time.
- LessonDefending as BBYou get the best price at the table — and some of the hardest postflop situations.
- LessonDefending as BTNWhen you can call and keep position, more hands can survive.
- ModulePreflop AggressionUnderstand 3-bets, 4-bets, squeezes and the battle for initiative.
- ModuleBuilding Your Preflop FoundationLearn why position, ranges and stack depth determine which hands enter the pot.
- ConceptPositionIP realizes ~10% more equity than OOP with symmetric ranges.
Source: Lesson metadata and objectives come from the StackedPoker curriculum; any theory shown is quoted from the StackedPoker concept registry.