What is kb ? (ultrabullet)

Hello everyone,
Sometimes, people critizise in ultrabullet tournment comments somebody because he plays with "kb". What is it ? For me, it's like keyboard, but i don't understand it. You can play with mouse or pad... or other ?

Thx for your answers
Bonjour.

Kb is keyboard input which means you can tap a letter on your keyboard and your pieces will move.

You can play much faster with it but some people are fast with mouse/phone

@bonjourbonjour , I made a video where I play with kb. Here is the link below.
The way it works is instead of grabbing pieces with mouse or finger, you hit a key and the corresponding piece moves to whatever square your mouse is hovering over.
www.youtube.com/watch?v=7nc_-_CCI6M

my name is Zayden_singh

Thx ! @x2ornot2b @ChessMathNerd

So, the first move is on keyboard (to select the piece) and the second move is the mouse who decides where to put the piece ? Intersting... Very efficiant indeed. I play with my phone and can't reach 2000 because of my speed and connexion.
Thx for the explanation

I play with phone too, just practise and you will get better!!

@x2ornot2b yeah that the goal ;) 1998 was my best, next month 2000 !

@bonjourbonjour , sort of. The way it works is you first place the mouse where you want the piece to go, you don't have to click at all. Then, just hit the key. For example, suppose I want to start with 1. e4. I put the curosr on the e4 square and hit e(that is my pawn forward button). Then, the pawn moves immediately. Don't have to actually click at all.

lol I always find it hard to play bullet or ultra on mobile