How Concepts Work | InGrappling

The concepts layer is the most misunderstood of the three content layers. This page explains what concepts are, how they differ from techniques and invariables, and how a grappler at each ability level should actually use them.

What a concept is

A concept is a pattern that explains how techniques connect. Not a single technique. Not a mechanical principle that applies to every technique. A mid-level abstraction: something true of a family of positions, transitions, or attack sequences that would be invisible if you only looked at individual techniques.

Examples of concepts:

“The kimura grip opens sweep, back take, and submission from half guard.” — A concept, because it explains how several half-guard outcomes connect to one grip.
”The triangle sits in a dilemma with the armbar and the omoplata.” — A concept, because it explains why skilled attackers do not treat these as independent submissions.
”Leg-drag passes create a back-take opportunity when the opponent defends one way.” — A concept, because it explains a tactical relationship between a pass and a back take.

None of these are techniques. None are universal principles. They live at the middle layer — general enough to apply beyond a single technique, specific enough to be wrong in certain positions.

Concepts vs techniques

A technique tells you how to execute a specific action. The butterfly sweep page tells you how to execute the butterfly sweep. A concept tells you when and why and what to look for next.

The distinction matters because many grappling questions fall between the two:

“How do I finish a kimura?” — a technique question. Answered on the kimura technique page.
”When do I use the kimura instead of the armbar?” — a concept question. Answered in the kimura system page.
”What do I do after I finish an armbar attempt and the opponent escapes?” — a concept question. Answered in submission-system and dilemma pages.

A student who only reads technique pages has the mechanics but not the transitions between them. A student who only reads concept pages has the transitions but not the mechanics. Both are necessary.

Concepts vs invariables

Invariables are mechanical laws. They are true regardless of technique, position, lineage, or ruleset. INV-01 (connection) is true of the kimura, the triangle, the front headlock, and the standing single-leg. The same invariable loads across thousands of techniques.

Concepts are patterns at a shallower level of abstraction. They are true of specific families — the kimura system, the half-guard system, the leg-drag passing system. Move outside the family and the concept no longer applies.

One way to test whether something is an invariable or a concept: does it apply to every technique in the sport? If yes, invariable. If it applies to a specific subset, concept.

The five concept types

The concepts layer on this site is organised into five subcategories:

Guard systems. How each guard functions as a connected offensive and defensive system. Butterfly, half guard, closed guard, X guard, de la Riva, seated guard, shin shield, and more.
Passing systems. The five families of guard passing (knee slice, smash, leg drag, torreando, half-guard passing) with their distinct mechanical signatures.
Submission systems. How chokes and joint locks chain from each position. Kimura, triangle, armbar, leg-lock, heel-hook, guillotine, anaconda/darce, RNC/back attack systems.
Tactical dilemmas. Forced-choice sequences where any defensive response opens another attack. The building blocks of a connected game.
Range objectives. What you are trying to achieve in each range — standing, guard bottom, guard passing, back, pins. Matches intent to range.
Gripping sequences. Grip-chain patterns and escalation logic.
Scramble concepts. Patterns that recur when the position breaks down — scrambles as learnable structures, not as chaos.

When to use the concepts layer

Different ability levels should use the concepts layer differently:

Foundations level. Mostly skip the concepts layer. Focus on tapping culture, the invariables, and learning individual techniques well. Concepts pages will make more sense once the techniques they reference are familiar. Exception: the range objectives pages are useful at foundations level as orienting material.
Developing level. Concepts are central. The jump from foundations to developing is largely a jump from technique collection to system understanding. Read the system pages (guard systems, submission systems, passing systems) in parallel with the developing curriculum.
Proficient level. Use concepts to diagnose gaps and refine. If a sparring round revealed a weakness, the concepts layer usually has the vocabulary for what went wrong.

Teaching concepts

For coaches: concepts are harder to teach than techniques because the student must have the underlying techniques before the concept is meaningful. Two common teaching approaches:

Concept-then-techniques. Introduce the concept (e.g. “the kimura grip opens three outcomes”), then drill the three outcomes. Risk: concepts without mechanical ground feel abstract.
Techniques-then-concept. Drill the three outcomes separately, then name the concept that ties them together. Risk: students who already hold the techniques may not feel the need for the conceptual connection.

The developing-level teaching tradition that seems to work best: teach the concept explicitly during the second or third session on a system, after the first session has introduced a single technique from that system. The first session establishes the ground; the second session names the pattern.

Common errors in concept use

Reading concept pages as if they were tutorials. Concept pages assume you know the techniques they reference. If you don’t, read those first.
Treating concepts as universal truths. Concepts apply to specific families. A dilemma that holds in half guard may not hold in closed guard. Check whether the concept actually applies to the position you’re in.
Learning concepts instead of training. A grappler who reads the concept pages without the underlying technique-level repetitions will have intellectual knowledge of concepts but cannot execute them. Concept understanding and mat skill are complementary, not substitutes.
Mistaking preferences for concepts. “I like half guard” is not a concept. “Half guard bottom with underhook opens three outcomes — sweep, back take, or kimura — depending on the defender’s response” is a concept.

The concepts layer is what separates a grappler who has learned the sport’s techniques from one who has learned the sport’s logic. Return to the concepts hub to explore the specific subcategories.