for the record, it’s not any formal notation. but the board is a grid of 8x8. I should have put it as 5x buzzes for ‘e’, and 2x’ buzzes for 2, but, uh, y’all get the idea. (so my sample is actually 2e to 3e, but details)
there’s actually no need from a move-calling perspective to identify what is on that square, or what’s on the square that’s being taken. There might be for tournament rules in chess, though, since the scorecard is a record of play for things. I’m just pointing out the technical feasibility of it.