Octopus Knight was famously coined by Kasparov during match against Karpov.

Their 1985 game and more information below.

OctopusKnight (above) created by @BISHOP_e3 just being nice as he is to everyone.
He’d rather I didn’t mention it so of course I will. ¯\_(ツ)_/¯

An "octopus" in chess is a powerful, centrally located knight deep within enemy territory, typically on the fifth or sixth rank. It controls many squares (often all eight) like tentacles. It paralyzes opponents, restricts piece movement, and often decides games.

Short by Levy, Gotham Chess suggest you watch this 3-minute clip first

https://youtube.com/shorts/rdbDdFC6efU?si=etTOFEVTvJGH0VUy

Karpov vs Kasparov 1985, the Octopus Knight game

https://www.chess.com/games/view/369176

A bit about me … which comes after Octopus Knight, as it should be

I’m a farm girl from Oregon, raised around outdoor music festivals, free-spirited living, and shoveling horse poop out of stalls. I enjoyed hiking and exploring the Pacific Northwest with my wonderful dogs, in Cascade mountain rescue, and as volunteer in various capacities over my many years. My life’s work was programming (now called coding) but mostly in older technologies. I’m retired and plan to spend the rest of my life having fun playing chess right here. :-)

@BISHOP_e3 shows d4 Knight position was also easily an Octopus Knight.

My sunflowers with brass horse (an unsaddled Knight) - Also by @BISHOP_e3

Live full moon joy!!

OCTOPUS_d6