Standard Turtle Collapse Arm Triangle Choke
Variety肩固め（亀からの崩し）(Kata Gatame — Standard Turtle Collapse)
TraditionalTranslation: Shoulder Hold / Head-and-Arm Choke — Turtle Collapse
Overview
A kata gatame variation against turtle where the attacker collapses the defender sideways to finish the choke. After threading under the near arm and feeding it across the neck, the attacker drives shoulder and chest pressure, collapsing the turtle base to one side and finishing the choke from top side control.
History & Origin
Rooted in Judo newaza kata gatame, adapted in BJJ and Sambo as a high-percentage attack against turtle defenders.
Effectiveness
Collapsing the turtle neutralises the opponent's base and creates dominant finishing angles; effective because the collapsed position naturally drives the arm across the neck. [1]
Lineage
The standard turtle collapse to arm triangle uses weight and hip pressure to flatten the turtled opponent before securing the choke. [1]
Competition Record
Turtle collapse arm triangles are used in BJJ competition as a way to finish against turtled opponents. [1]
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Biomechanical Mechanism
Position & Entry
Variants
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Ratings
Risk of injury to the person this technique is applied to
Collapsing the turtle removes base and quickly exposes the choke.
Skill level needed to execute this technique reliably
Whether this technique is allowed under major competition rule sets
Training Notes
Common Mistakes
Related Techniques
Counter Techniques
Setup Chain
Sources & References
Kodokan Judo — Official Katame-waza Classification (肩固め Kata-gatame)
Japanese terminology sourced from Kodokan Judo — Official Katame-waza Classification (肩固め Kata-gatame)
Official Kodokan ground technique classification system
Established Japanese martial arts naming convention — native Japanese term (和語/漢語)
Japanese terminology sourced from Kodokan Judo — Official Katame-waza Classification (肩固め Kata-gatame)
Community
Athletics
hip flexibility, long legs relative to torso
longer limbs for easier figure-four lock around head and arm
hip adductors, hamstrings, quadriceps
Notes
One of the most reliable methods to attack turtle, as it combines positional breakdown with a direct submission threat.
Frequently Asked Questions
How does the Standard Turtle Collapse Arm Triangle Choke work?
A kata gatame variation against turtle where the attacker collapses the defender sideways to finish the choke. After threading under the near arm and feeding it across the neck, the attacker drives shoulder and chest pressure, collapsing the turtle base to one side and finishing the choke from top side control.
Where does the Standard Turtle Collapse Arm Triangle Choke come from?
Rooted in Judo newaza kata gatame, adapted in BJJ and Sambo as a high-percentage attack against turtle defenders.
How dangerous is the Standard Turtle Collapse Arm Triangle Choke?
Danger: 9/10 | Collapsing the turtle removes base and quickly exposes the choke.
How do I set up the Standard Turtle Collapse Arm Triangle Choke?
The standard setup chain: Achieve Controlling Position → Isolate the Neck → Set the Grip → Apply Pressure.
How do I defend against the Standard Turtle Collapse Arm Triangle Choke?
Standard counters include: Tuck Chin — protect the neck by lowering the chin to prevent the choke from sinking / Two-on-One Grip Fight — use both hands to strip the choking grip before it locks / Turn Into — rotate toward the choking arm to relieve carotid pressure / Posture Up — straighten the spine and create distance to break the choking angle.
What are the variants of the Standard Turtle Collapse Arm Triangle Choke?
Common variants: Collapse directly into side control; Collapse into mount finish; Collapse into north-south choke.
How effective is the Standard Turtle Collapse Arm Triangle Choke in competition?
Turtle collapse arm triangles are used in BJJ competition as a way to finish against turtled opponents.
What are common mistakes when doing the Standard Turtle Collapse Arm Triangle Choke?
Top errors to watch for: Collapsing before securing head-and-arm lock / Not blocking hip, allowing spin escape / Squeezing too early without angle.
What are other names for the Standard Turtle Collapse Arm Triangle Choke?
The Standard Turtle Collapse Arm Triangle Choke is also known as Kata Gatame — Standard Turtle Collapse, Standard Turtle Arm Triangle, Kata Gatame Turtle Collapse, Turtle Breakdown Arm Triangle.