Defending the Open
Defending as BTN
When you can call and keep position, more hands can survive.
18 min
12
Defending the Open
What "Defending as BTN" teaches
When you can call and keep position, more hands can survive.
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
- Btn defense
- Position three bet
- Players behind aggression
- Equity realization preflop
- Range construction
How the interactive lesson works
The full lesson is 12 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 12-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 "Defending as BTN" lesson cover?
When you can call and keep position, more hands can survive. It runs 12 interactive steps and takes about 18 minutes.
How long does "Defending as BTN" take?
About 18 minutes across 12 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 "Defending as BTN" 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.
- LessonDefending as SBA discount helps. Being out of position with the big blind behind hurts.
- LessonDefense RoomRead the open. Read the table. Build the response.
- LessonBuild Your Defense RangeStop solving one hand at a time.
- 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.