s0nicfan posted...
It's probably necessary. IIRC some speedrun tricks require either playing on keyboard or shaving down the underside of your NES d-pad because the tricks require multiple frame-perfect inputs that involve switching between left and right rapidly and it's physically not possible on a normal controller.
From the video description.
Keyboard offers no advantage, and it is actually debatably worse for speedrunning this game. I use keyboard over controller for personal preference reasons, I have been playing games on keyboard since a little kid, and I have a very good feel for it compared to controller.
[...]
Another misconception is that some people think I am able to input L+R using a keyboard. It is possible to do so, but since it isn't possible with a standard NES controller without it being broken or modified, inputting this is banned. I have to have an option in my emulator settings that makes L+R input nothing, so no invalid input was done during this run.
https://i.imgur.com/lfI7zGE.jpg https://i.imgur.com/tgLNUuX.jpg
Come to the (un)official GameFAQs Touhou board. http://www.gamefaqs.com/boards/1110-