A drum

was used as the round signal and a match
was established at 11 rounds of three minutes each. Boxers were to break when
the referee so ordered, and it was now forbidden to bite one’s opponent or to attack
him while he is falling. Boxers had to go to a neutral corner when their opponent
fell down. Music for the fights was played by the orchestra of Muen Samak
Siangprachit.