Brazilian Jiu-Jitsu (BJJ) is a dynamic martial art with numerous effective techniques. It’s important to note that the effectiveness of techniques can vary depending on various factors such as body type, skill level, and personal preference. However, here are five commonly regarded as highly effective BJJ techniques:

1. Rear Naked Choke: The Rear Naked Choke (RNC) is a submission technique that targets the opponent’s neck. It involves positioning oneself behind the opponent and securing a grip with one arm around their neck while the other arm assists in maintaining control. The RNC can quickly render an opponent unconscious if applied correctly.

2. Triangle Choke: The Triangle Choke is another powerful submission that can be executed from various positions. It involves trapping an opponent’s head and arm between your legs while applying pressure to their neck using your legs and one of your arms. The Triangle Choke is effective at cutting off blood flow and forcing a submission or rendering the opponent unconscious.

3. Armbar: The Armbar is a joint lock that primarily targets the opponent’s elbow. It can be executed from different positions and involves controlling the opponent’s arm, securing a grip on it, and hyperextending the elbow joint. The Armbar is a versatile technique and can be used as both an offensive and defensive move.

4. Guillotine Choke: The Guillotine Choke is a submission technique that targets the opponent’s neck using their own collar or the arm. It can be executed from various positions, such as when an opponent shoots for a takedown or during a scramble. The Guillotine Choke can be highly effective, often forcing a quick tap or rendering the opponent unconscious.

5. Kimura Lock: The Kimura Lock is a powerful joint lock that targets the shoulder joint. It involves controlling the opponent’s arm, isolating it, and applying leverage to force the shoulder joint beyond its normal range of motion. The Kimura Lock can be used from multiple positions and is known for its effectiveness in controlling and submitting opponents.

Remember, while these techniques are commonly regarded as effective, it’s important to train and practice them under the guidance of a qualified BJJ instructor. Additionally, the effectiveness of techniques can vary depending on the specific situation, timing, and the skill level of both you and your opponent.