Technique /// Escapes & Defence
Opposite Triangle Escape
Escapes & Defence • Proficient
This technique has elevated risk. Make sure you've covered the prerequisites before attempting.
Escape route from
Escapes land in
What This Is
The opposite triangle — hantai sankaku — is the reversed-lock triangle. For the attack, see Opposite Triangle. The trapped head-and-arm configuration is identical to a front triangle; what differs is the figure-four itself, locked on the reversed side with the choking knee on the same side as your trapped arm rather than across from it.
⚠ The good news and the bad news are the same fact: as a strangle it barely works. With the lock reversed, the choking leg’s calf never crosses the carotid line, so the bilateral compression a front triangle depends on is unavailable — and squeezing harder does not fix a geometric problem. ⚠ What it does platform is an armlock. The kimura is the finish this configuration actually threatens, and a defender who reads the reversed lock as a weak choke and settles in to wait is defending the wrong submission.
It is rarely chosen deliberately. It arises mid-scramble or mid-entanglement, when the legs close on whichever configuration the exchange offers and the figure-four lands on the available side rather than the correct one. Unlike most triangle pages the standard escapes do apply — you have posture and you can stack — and you have more time than the shape suggests, provided you spend it on the arm.
Also Known As
- Opposite-side triangle escape
Safety First
⚠ Calibrate on the arm. The common failure here is a defender who correctly reads that the choke is not closing, concludes they have time, and keeps the trapped arm where it is. That is the wrong reading of a real weakness: the configuration is a poor strangle and a good armlock platform, and the tap threshold belongs to the shoulder rather than to the neck.
Defence Timing
The stages are ordinary triangle stages until the lock closes. What changes is what the closed lock means.
Early — the legs are closing, the side is not yet determined
Nothing distinguishes this from a front triangle yet, and the answers are the same: posture, hands in, deny the head being pulled down, and get the trapped arm moving before the figure-four closes on anything. The reversed lock is not a choice the attacker is making, so there is nothing distinctive to read here.
Locked, reversed — the figure-four has closed on the wrong side
The choking knee has landed on the same side as your trapped arm rather than across from it. It will feel like a triangle that is not tightening, and that feeling is accurate. ⚠ It is also the moment the exchange changes character: the attacker’s realistic finish is now the shoulder, not the neck, and their realistic improvement is to reconfigure into a correct triangle. Both of those are things you defend with the arm.
The arm being attacked — the kimura is being set
The trapped arm is being isolated and rotated with the legs anchoring the shoulder. Treat this exactly as you would any kimura: the wrist comes home to your own body and the elbow gets tight, before the rotation starts. The legs are not the problem to solve.
The reconfiguration — the attacker is switching to a correct lock
An experienced attacker will not sit in the reversed lock; they will open and re-close on the correct side. That transition is the best escape window on the page, because the legs have to loosen to move. Posture and clear the head while the figure-four is open.
The Invariant in Action
It is worth saying plainly, because it reverses the usual advice. In most triangle configurations a defender who feels the lock close should assume the worst and act on the neck. Here the lock closing is the moment to stop worrying about the neck and start defending the shoulder.
Everything defensive on this page routes through the arm. The neck is safe by accident of geometry; the shoulder is exposed by the same accident, because the legs that failed to close on the carotid are perfectly well placed to anchor a rotation.
Which is the argument for posture. Posture costs something to hold and it is what converts the reconfiguration window from a thing that happens to you into a thing you use.
Named Escape Techniques
1. Recognise the Reversed Lock, Then Defend the Arm
When it works As soon as the figure-four closes. A read rather than a movement, and the one that decides the exchange.
- Feel where the closing knee sits relative to your trapped arm. Same side means the reversed lock, and it means the strangle is not the threat.
- Bring the trapped wrist home to your own chest or belt line and clamp the elbow to your ribs. Do this before anything else.
- Grip your own far shoulder or leg with the trapped hand if you can reach — a self-grip is what stalls the rotation.
- Keep the head up and the posture on. You have time here that you would not have in a correct triangle; spend it deliberately.
Why it fails Reading the weak choke as safety. ⚠ The defender relaxes, leaves the arm extended, and is finished by a kimura from a configuration they had correctly identified as a poor strangle.
Ability level: Proficient
2. Posture and Stack
When it works Any stage. Unusually available here, because you are the passer and your posture was never taken.
- Stand your posture up and drive your hips forward, stacking their legs back over them.
- Keep the trapped arm tight to your body as you stack — the stack pressures the legs, it does not free the arm, and an arm left loose during it is an arm offered to the rotation.
- Walk toward the closed side to shorten the lever their legs have on your neck and shoulder.
- Clear the head as their configuration loosens under the stack.
Why it fails Stacking with the arm extended. The stack increases the load through whatever the legs are anchoring, and if that is a straight arm it accelerates the shoulder rather than the escape.
Ability level: Developing
3. Escape on the Reconfiguration
When it works As the attacker opens the figure-four to re-close on the correct side. The best window available.
- Expect it. An attacker who knows the lock is reversed will not stay there, so the beat is coming.
- The moment the legs unhook, drive posture up and pull the trapped arm out along your own centreline.
- Turn toward the closed side as the head clears, which is the shorter path out from under their hips.
- ⚠ If the legs re-close before the arm is out, treat what follows as a correct triangle — the geometry that was protecting you has gone.
Why it fails Not expecting the switch. Defenders who settle into the reversed lock are comfortable for exactly as long as it takes the attacker to fix it.
Ability level: Proficient
What Causes Escapes to Fail
Defending the neck
⚠ The defining error. The calf never reaches the far carotid in this configuration, so the choke is not the finish being threatened. Hands go to the leg, the trapped arm stays where it is, and the kimura arrives from a position the defender had correctly assessed as a weak strangle.
Reading time as safety
The extra seconds are real. What they are for is the arm, and a defender who banks them without spending them is simply waiting for the attacker to choose a better finish or a better lock.
Missing the reconfiguration
The escape window on this page is created by the attacker fixing their own mistake. A defender lying flat and comfortable does not see it, and the lock that follows is the one that works.
Stacking with a loose arm
Stacking is available and worth doing, and it drives load through whatever the legs have anchored. With the arm extended that load goes to the shoulder, which turns a good positional answer into a submission.
Counter-Offensive Options
An attacker in a reversed lock has committed both legs to a configuration that does not finish. That is a strong position for the passer if the arm is safe.
Because your posture was never broken, the ordinary passing answers stay live: stack and walk toward the closed side, or drive the hips forward and pass over the top as they open the legs to reconfigure. The reconfiguration beat in particular is a passing opportunity as much as an escape — legs that have unhooked to swap sides are legs that are not defending the pass.
⚠ All of it is conditional on the trapped arm. Take that with you or none of it is worth attempting.
Drilling Notes
- Which lock is it. Partner closes a triangle from the passer’s guard, alternating randomly between the correct and reversed configurations. Defender calls it out by feel before doing anything. ⚠ This is the drill that matters, because the whole defence changes on the answer and the cue is subtle.
- Arm home first. From a locked reversed triangle, partner works for the kimura. Defender practises bringing the wrist to their own body and clamping the elbow before addressing anything else. Ten reps. Any rep where the defender’s hands go to the legs first counts as a failure regardless of the outcome.
- Use the switch. Partner locks reversed, holds for two seconds, then deliberately opens to re-close correctly. Defender must be posturing and extracting on the opening, not reacting to the new lock. Reduce the hold to one second.
Ability Level Guidance
Developing
Learn that a triangle which is not tightening is telling you something, and that the something is about your arm. Posture and stack as you would against any guard triangle, keeping the trapped arm connected to your body throughout.
Proficient
Learn to identify the reversed lock by feel and to switch your defensive priority from the neck to the shoulder when you do. Add the kimura defence — wrist home, elbow tight, self-grip — as the first action rather than a later one.
Advanced
Anticipate the reconfiguration and treat it as a passing opportunity rather than an escape. At this level the reversed triangle should read as an attacker error you convert, not a submission you survive.
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