I was referring to the challenge match in 1964.
LOL, the one where they used Judo throws to win against the MT fighters?
this from an interview with an interview with Kenji Kurosaki, Osamu Noguchi. It might also explain why they don't want karateka or TKDoists in their ring. Never underestimate national pride.
"
In February 12, 1964, 3 Kyokushin fighters (Tadashi Nakamura, Kenji Kurosaki and Akio Fujihira) fought 3 Muay Thai fighters (Tan Charan, Rabi Dechashi, Huafai Lukcontai) in the Lumpinee stadium in Thailand. Actually Kurosaki was there as trainer&coach, but Oyama and Okada (the originally planned 3rd fighter) had to return to japan after the fight had been delayed several times.
The end result was kyokushin:2 vs Muaythai:1
The kyokushin fighters had won by KO (by Highkick in rnd 1 by Nakamura, and punch in rnd 2 by Fujihira) and lost one by doctor stoppage (due to a bleeding cut over Kurosakis eyebrow from a elbow in the final round).
The Thais have been doing their best to ignore that this event ever took place ever since then. Downplaying the skill of the thai fighters (despite them being top ranked at the time) and focusing on their more successful later challenges to american karate kicboxing etc -that forged their reputation as unbeatable in standup fighting.
Kurosaki, then second in command in kyokushin, later became a pioneer and basically founder of japanese kickboxing. A legendary trainer and coach. His Gym, The Mejiro Gym spawned many legendary fighters (Toshio Fujiwara being the most famous), and strongly influenced dutch kickboxing (the dutch mejiro gym was founded by his students).
Fujihira became a champion kickboxer (training under Kurosaki) under the fightname Noboru Ozawa. Nakamura founded the world seido karate organization"