Half Guard to Kimura Trap is a bottom-side control entry that threads the inside arm under the opponent’s exposed tricep to lock a figure-four grip, converting half guard retention into the Kimura Trap control system.
Half Guard to Kimura Trap is the control entry that connects half guard bottom to the Kimura Trap system. It is a positional entry, not a finish: the success outcome establishes the figure-four grip and the control structure that comes with it, and the submission is a separate decision taken from there. That distinction is the whole point of the node. A move whose success edge reaches the game-over sink is a submission and is authored as one; this move’s success edge reaches a position, so it is a transition.
The entry opens when the top player commits their arm — posting a hand on the mat to base, reaching across for a crossface, or driving an underhook deep during a pass attempt. The bottom player, on their side with the inside hip elevated, threads their inside arm under the exposed tricep, grips their own wrist, and closes the figure four. The half guard leg entanglement is what makes the grip matter: it anchors the top player in place while the shoulder is isolated, so they cannot simply stand up and pull the arm free.
Once the grip closes, the position inverts. The Kimura grip controls the opponent’s shoulder girdle regardless of who is nominally on top, which is why the Kimura Trap is authored as a control system rather than a submission setup. From there the bottom player’s options fan out into sweeps, back takes and the finish itself. Failing the entry usually costs nothing but the grip — you are still in half guard — which is why it is a low-risk, repeatable attack. Losing it badly means the top player clears the entangled leg while your arm is committed, and you concede the pass.
From Position: Half Guard (Bottom) Success Rate: 40%
Possible Outcomes
| Result | Position | Probability |
|---|---|---|
| Success | Kimura Trap | 40% |
| Failure | Half Guard | 40% |
| Counter | Side Control | 20% |
Attacker vs Defender
| Attacker | Defender | |
|---|---|---|
| Focus | Execute technique | Prevent or counter |
| Key Principles | The grip is the objective — do not trade it for a sweep or a… | Win this before the grip closes — after the figure four cons… |
| Options | 6 execution steps | 3 defensive options |
Playing as Attacker
Key Principles
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The grip is the objective — do not trade it for a sweep or a finish before it is closed and deep
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Stay on your side with the inside hip elevated; a flattened hip removes both the thread space and the shoulder leverage
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Take the arm the opponent gives you rather than hunting a specific one — post, crossface and underhook all expose the tricep
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Keep the half guard leg entanglement live throughout; the grip only controls because the legs prevent disengagement
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Close the figure four as close to the opponent’s elbow as the arm allows — a wrist-end grip gives the shoulder room to rotate free
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Treat a failed entry as free: you return to half guard having spent only grip effort, so the attack is repeatable
Execution Steps
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Establish the side position: Shrimp onto your inside hip so your shoulders are stacked vertically rather than flat. This creates …
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Anchor the legs: Confirm the half guard entanglement on the opponent’s near leg, adding the lockdown if their base is…
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Wait for the arm to commit: Let the opponent post to base, reach for the crossface, or drive an underhook. Do not reach for an a…
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Thread the inside arm: Drive your inside arm under the exposed tricep and up along the far side of their arm, palm turning …
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Close the figure four: Meet the threading hand with your free hand, grip your own wrist, and close the loop over the top of…
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Consolidate the trap: Pull the captured arm across their centreline or toward their back to load the shoulder, and re-sett…
Common Mistakes
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Threading from a flat back
- Consequence: No space under the opponent’s chest and no shoulder leverage, so the arm gets pinned and the underhook is lost.
- Correction: Shrimp onto the inside hip first and confirm your shoulders are stacked before the arm moves.
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Reaching for an arm that has not committed
- Consequence: The opponent circles the arm free and takes the underhook you vacated, often ending in a pass.
- Correction: Bait the commitment with a lockdown or an off-balance and take the arm only once it is posted or extended.
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Gripping at the wrist end of the arm
- Consequence: The lever is long, the shoulder rotates free easily, and the trap never consolidates.
- Correction: Walk the closed figure four toward the elbow before you load the shoulder.
Playing as Defender
Key Principles
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Win this before the grip closes — after the figure four consolidates every option costs you something
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Base on your head, knee and hip rather than a posted hand whenever the bottom player is on their side
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Keep the elbow pinned to your ribs; an arm tight to the body has no tricep gap to thread under
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If the thread starts, extract before the two hands meet — that is the only clean window
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Once the grip is closed, pass the entangled leg instead of fighting the shoulder — position beats grip strength
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Never let them flatten you onto your side while the grip is live; that is the sweep, not the submission
Recognition Cues
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The bottom player shrimps onto their inside hip and their shoulders stack vertically
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Their inside hand starts travelling under your near tricep rather than framing on your hip
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They stop attacking the underhook and go quiet, waiting for your arm to commit
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The lockdown closes on your trapped leg, which usually precedes an attack on your base
Defensive Options
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Hide the arm — keep the elbow pinned to your ribs and base on head, knee and hip - When: Pre-emptively, whenever the bottom player is on their side with an elevated hip.
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Extract early — rip the arm straight back before the two hands meet - When: The instant you feel the thread begin and the loop is still open.
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Concede the grip and pass the leg - When: The figure four is already closed and consolidating.
Position Integration
This is the gateway node between half guard bottom offense and the Kimura Trap control system, and it is the only success-result arrival into Kimura Trap/Bottom. Without it, that state is enterable only by failing one of your own moves, which makes an entire authored control system reachable by accident and never on purpose. It sits alongside the other Half Guard/Bottom control entries — Half Guard to X-Guard, Half Guard to K-Guard, Half Guard to Old School — as an alternative offensive line when the underhook sweeps and back takes are being defended, and it feeds the Old School Sweep, Kimura Sweep and Half Guard to Back Take lines that Kimura Trap/Bottom deals.