Is the Rear Naked Choke, Gullotine Choke and the Triangle Choke taught and allowed in Judo competitions?
They are all allowed. The RNC and guillotine are both called “Hadaka Jime” and the triangle “Sankaku Gatame”. The RNC is not so common because gi chokes are preferred with the gi on. Just look at how many RNC’s occur at the highest levels of BJJ competition: almost all competitors prefer the sliding collar choke (okuri eri jime in Judo). The Guillotine choke is allowed, but the opportunity to attack with it is slim and when that opportunity arises you are in danger of being Ipponed. For instance, if an opponent shoots in on a double (morote gari), and you sink the guillotine, you will probably still be planted on your back and will thus lose the fight by Ippon before you can finish the submission. Also, players in Judo prefer upper body throws to shooting for the legs wrestling style, especially given the much stricter rules dealing with these hand-to-leg techniques nowadays. The triangle position is, believe it or not, one of the most common positions in Judo newaza. The difference is
