Chess:

  *  The interface is typically NOT optimized for keyboard.

Typing E4D5 is not optimized. You need to look at a square in the middle, then look which row it is, and which column it is. I've implemented a better one for a similar game (Jungle). You press a character key to highlight one of your pieces, and the game essentially highlights legal moves by displaying alphanumeric chars on tiles. Instead of 4 keypresses, you have 2. In Chess it could be like this: 1-8 selects a pawn, b/B one of bishops, r/R - rooks, k/K - knights, q - queen, i - king. Then another character depending on what shows up where you want to move.

  *  People who play realtime chess (one example is Kung Fu Chess)do use keyboard

certainly those playing in tournaments.

E4-D5 notation is optimized for recording games, not for playing.