What anatomical structures does the rear naked choke from mounted crucifix target, and how does proper forearm placement achieve compression?

The RNC targets both carotid arteries simultaneously, cutting arterial blood flow to the brain. The choking forearm compresses the near-side carotid while the bicep compresses the far-side carotid. The opponent's throat sits in the elbow crease, avoiding tracheal pressure. The locking hand behind the head pushes the head forward into the V created by the arm, tightening the bilateral compression. Proper placement produces unconsciousness in 4-10 seconds through cerebral ischemia rather than the slower, more dangerous airway choke.

What makes the mounted crucifix position specifically advantageous for finishing the RNC compared to standard back control?

The mounted crucifix traps one or both of the opponent's arms using the attacker's legs, eliminating the primary defensive tools that make the standard RNC difficult to finish. From back control, the defender uses both hands for grip fighting, chin protection, and frame creation. From mounted crucifix, those hands are neutralized, allowing the attacker to thread the choking arm with minimal resistance. Additionally, the mount's gravitational weight advantage adds chest compression that augments the choke's effectiveness while preventing explosive escape movements.

Your opponent maintains a strong chin tuck that prevents you from sliding the choking arm beneath their chin - what adjustments should you make?

First, use your free hand to cross-face the opponent, turning their head away from the choking-arm side to create an opening along the exposed neck. If the chin remains tucked, apply the choking arm over the chin and use jaw pressure to force the opening. You can also shift your hips slightly to angle the choking arm's entry from a different direction. If chin defense remains absolute, switch to alternative attacks like the armbar on a trapped arm, which forces them to address a different threat and often opens the neck on the subsequent attempt.

What indicators tell you the blood choke is properly locked and effective versus being a pain-based windpipe choke?

A properly locked blood choke produces facial color changes within seconds, the opponent's movements become sluggish or uncoordinated, and they may appear confused before tapping. The feeling for the attacker is a snug, even squeeze around the neck sides with no significant resistance against the forearm bone from the trachea. A windpipe choke feels like the forearm is pressing into hard cartilage, the opponent coughs or makes choking sounds, and the submission is slow and painful rather than swift. If you feel tracheal resistance, reposition the forearm laterally to find the softer carotid target.

What control requirements must be satisfied before initiating the choke from mounted crucifix?

Before attacking the RNC, you must have stable mounted crucifix with at least one arm securely trapped by your legs with knees pinched tight. Your weight must be distributed with forward chest pressure preventing explosive bridges. The arm trap must be secure enough to hold even when your hands transition from positional control to choke setup. Your base should be tested with a brief weight settling period to verify the opponent cannot immediately disrupt your position. Initiating the choke from an unstable crucifix risks losing the entire dominant position.

At what point during the choke application does the submission become inescapable, and what does this mean for training safety?

The point of no escape occurs once the figure-four grip is fully locked behind the head with the choking arm deep across both carotids. At this stage, the defender has no mechanical advantage to break the grip or create space without free arms. In training, this recognition point is critical because the choke finishes within seconds after locking. Experienced practitioners should tap at grip completion rather than waiting for full squeeze. Training partners must apply squeeze gradually after locking the grip, giving adequate tap time. Never explosively squeeze a fully locked RNC.

Rear Naked Choke from Mounted Crucifix Attacker | BJJ Submission Guide

SAFETY: Rear Naked Choke from Mounted Crucifix targets the Carotid arteries and jugular veins. Risk: Loss of consciousness from bilateral carotid compression. Release immediately upon tap.

Attacking the rear naked choke from mounted crucifix combines the positional dominance of mount with the arm-neutralization of the crucifix to create an almost undefendable choking scenario. With one or both of the opponent’s arms trapped by your legs, the usual grip fighting and hand defense that makes the standard RNC difficult to finish is largely eliminated. Your task shifts from fighting for the choke to methodically placing it, threading the choking arm beneath the chin while maintaining mount stability. The finishing squeeze applies bilateral carotid compression using the forearm and bicep, with your chest weight adding compression from above. This is a position where patience and precision yield taps, not explosive force.

From Position: Mounted Crucifix (Top)

Key Attacking Principles

What are the key principles for executing Rear Naked Choke from Mounted Crucifix?

Maintain mount stability throughout the choking sequence - positional control must never be sacrificed for the finish
Thread the choking arm beneath the chin using small angle adjustments rather than forcing past the jawline
Keep chest weight forward on the opponent’s upper body to prevent bridging escapes during arm placement
Target the carotid arteries with the blade of your forearm, never compress the trachea directly
Complete the figure-four grip behind the head before applying squeeze pressure
Use the opponent’s trapped arm status to your advantage - they cannot effectively grip fight your choking arm
Squeeze with your entire upper body contracting toward center, not just arm strength

Prerequisites

What do you need before attempting Rear Naked Choke from Mounted Crucifix?

Mounted crucifix position established with at least one of opponent’s arms securely trapped by your legs
Opponent’s chin or jawline accessible for choking arm entry - not buried against their own chest
Your weight distribution prevents explosive bridging while keeping upper body mobile for arm threading
Leg position maintains arm trap integrity even as your hands reposition from control to choke setup
Free hand available to control opponent’s head position or assist choking arm past the chin

Execution Steps

How do you execute Rear Naked Choke from Mounted Crucifix step by step?

Consolidate mounted crucifix control: Settle your weight low through your hips onto the opponent’s midsection. Verify that your legs are securely trapping one or both of their arms with knees pinched tight. Ensure you have stable base before initiating any hand movement toward the neck. Rushing this step risks losing the crucifix entirely. (Timing: 5-10 seconds to verify stability)
Establish head control with free hand: Place your non-choking hand on the opponent’s forehead or jaw, turning their face away from your choking-arm side. This creates a larger opening on the choking side of the neck and prevents them from chin-tucking effectively against your approach. Maintain forward chest pressure throughout this adjustment. (Timing: 2-3 seconds)
Thread choking arm beneath the chin: Slide your choking arm under the opponent’s chin with your forearm blade targeting the side of the neck. Use small hip adjustments and angle changes to work past any chin defense rather than forcing the arm through. The wrist bone should clear the chin line with the forearm settling across the carotid artery on the near side. (Timing: 3-5 seconds, adjust patiently)
Deepen the choking arm to elbow crease position: Walk your choking arm deeper until the opponent’s throat sits in the crook of your elbow. The bicep should press against one carotid artery and the forearm against the other. Keep your choking-side shoulder tight against their head to prevent them from turning into the choke and creating space. (Timing: 2-4 seconds)
Secure the figure-four lock behind the head: Bring your free hand behind the opponent’s head and place it on or near your own bicep of the choking arm. Your choking hand grabs your opposite shoulder or bicep, completing the figure-four configuration. The lock should feel tight before any squeeze begins - a loose grip wastes energy and allows defensive adjustments. (Timing: 1-2 seconds)
Apply progressive bilateral squeeze: Contract both arms inward toward the center while simultaneously pushing the back of the opponent’s head forward with your locking hand. The squeeze compresses both carotid arteries, cutting blood flow to the brain. Apply pressure progressively in training, allowing time for the tap. Your mount weight adds chest compression from above. (Timing: 2-4 seconds to tap in training)
Adjust angle if initial squeeze meets resistance: If the opponent manages any chin defense or the choke feels shallow, micro-adjust by shifting your hips slightly to the choking-arm side and re-angling the forearm deeper across the neck. Maintain the figure-four lock and re-apply. Sometimes a slight head turn using your chest pressure opens the angle needed for the blood choke to complete. (Timing: 2-3 seconds for adjustment)

Possible Outcomes

Result	Position	Probability
Success	game-over	65%
Failure	Mounted Crucifix	23%
Counter	Closed Guard	12%

Opponent Defenses

How might your opponent defend against Rear Naked Choke from Mounted Crucifix?

Chin tuck defense - opponent buries chin to chest preventing choking arm entry (Effectiveness: High) - Your Response: Use your free hand to cross-face and turn their head, or work the choking arm over the chin applying jaw pressure until they open. Alternatively, switch to attacking the exposed trapped arm with an armbar. → Leads to Mounted Crucifix
Explosive bridge during choke setup to disrupt grip placement (Effectiveness: Medium) - Your Response: Drive chest weight forward and ride the bridge rather than fighting it. Time your arm threading to coincide with the moment after the bridge peaks when their energy is spent and they return flat to the mat. → Leads to Mounted Crucifix
Arm extraction attempt during the choking arm transition when leg pressure loosens (Effectiveness: Medium) - Your Response: Pinch knees tighter to maintain arm trap. If one arm begins escaping, accelerate the choke finish before they restore hand defense. Alternatively, transition to armbar on the escaping arm to punish the extraction. → Leads to Closed Guard
Turning into the choke side to reduce forearm leverage on the neck (Effectiveness: Low) - Your Response: Follow the turn with your chest pressure and use the rotation to deepen the choking arm further. Turning into the choke side actually exposes the back, allowing transition to back control if the choke becomes obstructed. → Leads to Mounted Crucifix

Common Attacking Mistakes

What mistakes should you avoid when executing Rear Naked Choke from Mounted Crucifix?

1. Placing the forearm across the trachea instead of the carotid arteries

Consequence: Creates a windpipe choke that is painful, slow, and risks serious tracheal injury. Opponent may endure significant damage before tapping due to different submission mechanics.
Correction: Position the blade of the forearm against the side of the neck targeting the carotid artery. The throat should sit in the elbow crease, not against the forearm bone.

2. Abandoning mount weight to reach for the choke with both hands simultaneously

Consequence: Reduces positional control that makes this choke effective. Opponent gains bridging space and may escape mount entirely during the grip transition.
Correction: Keep chest pressure heavy on opponent throughout. Move one hand at a time - establish head control first, then thread choking arm while maintaining forward weight.

3. Squeezing the choke before the figure-four grip is fully locked behind the head

Consequence: Premature squeezing with an incomplete grip wastes energy and allows the opponent to slip the choking arm using their chin or shoulder, creating a scramble opportunity.
Correction: Complete the full figure-four lock before applying any squeeze pressure. Verify that the bicep, forearm, and locking hand are all properly positioned before compressing.

4. Using only arm strength to apply the squeeze without engaging chest and shoulders

Consequence: Arms fatigue quickly producing an ineffective choke the opponent can survive. The choke becomes a grinding experience rather than a clean blood choke finish.
Correction: Engage entire upper body by contracting chest, shoulders, and arms toward center simultaneously. The squeeze should feel like hugging yourself tightly, not arm wrestling.

5. Rushing the arm threading and forcing past chin defense rather than using setup

Consequence: Telegraphs the attack allowing opponent to set defensive chin tuck. May lose forearm position and end up on the jaw rather than the neck, wasting the positional advantage.
Correction: Work the choking arm into position with small angle adjustments and patience. Use head control with the free hand to create openings rather than forcing through resistance.

6. Loosening leg control on trapped arms while focusing entirely on the choke

Consequence: Opponent extracts arms and immediately creates frames, grip fights the choking arm, or escapes the mounted crucifix entirely, negating the primary advantage.
Correction: Maintain constant knee pressure on trapped arms throughout the entire choking sequence. The leg traps are what make this position’s RNC uniquely effective - never sacrifice them.

Training Progressions

How do you train Rear Naked Choke from Mounted Crucifix (Attacker)?

Phase 1 - Grip Placement Drilling - Choking arm positioning and figure-four mechanics without resistance Partner lies still in mounted crucifix bottom. Practice threading the choking arm beneath the chin, positioning the forearm across the carotid arteries, and completing the figure-four lock. No resistance, no squeeze. Focus entirely on arm placement accuracy and feeling correct neck positioning. 20 repetitions per side.

Phase 2 - Controlled Finishing with Cooperative Partner - Progressive squeeze mechanics and tap recognition sensitivity With grip placement established, practice applying gradual squeeze pressure against a cooperative partner who taps when they feel the blood choke engage. Develop sensitivity for when the choke is properly locked versus when adjustments are needed. Emphasize slow, progressive application and immediate release on tap.

Phase 3 - Light Resistance Drilling - Handling chin defense and bridging while maintaining crucifix position Partner provides 50% resistance including chin tucking, light bridges, and mild arm extraction attempts. Practice maintaining crucifix control while working through defensive responses to achieve the choke. Develop the ability to chain head control into arm threading into grip locking under dynamic conditions.

Phase 4 - Full Resistance Positional Sparring - Competition application and alternative attack chains from mounted crucifix Start in mounted crucifix with full resistance. Attacker works to finish the RNC while defender uses all available escapes. Practice recognizing when the RNC is available versus when alternative attacks like armbars or transitions to back control are better options based on defensive reactions.

Rear Naked Choke from Mounted Crucifix Attacker

Outcomes