Nope
@erlinghaaland, that’s not what
@ChessMathNerd means.
1. Kb chess is when there is a specific key on your keyboard for each piece. To move, you press the key for the piece you want to move, and at the same time hovering your mouse over the square you want it to move to. Note that you can customise the keys: you can make any key on your keyboard correspond to any piece.
2. It is faster because you don’t have to drag and drop. Also, especially in the endgame, you can hold keys down. E.g. when moving with your king in the endgame you can just hold the king key down and move your mouse around like crazy. Also you can hold multiple keys.
3. All you need is a keyboard like the one you typed your message with, and a extension that you can download for chrome, I will send it later.