Ah, OK, I had seen this. I thought that you had a new icon/symbol for the Alibaba.
Not sure that these S and T are a real progress at a second thought. Well, K and Q are also two "bi-atom", FW and BR, but in these cases those "shortcuts" are related to well known pieces, standard moreover, King and Queen. Writing K instead of FW is clearer.
Second and Third are not pieces, so there is no added clarity. Second could be also understood as a leap to any second square as a Squirrel, ADN, which, coincidence, also starts with an S. So, adding another convention to be learnt just to save 1 letter is arguable.
Ah, OK, I had seen this. I thought that you had a new icon/symbol for the Alibaba.
Not sure that these S and T are a real progress at a second thought. Well, K and Q are also two "bi-atom", FW and BR, but in these cases those "shortcuts" are related to well known pieces, standard moreover, King and Queen. Writing K instead of FW is clearer.
Second and Third are not pieces, so there is no added clarity. Second could be also understood as a leap to any second square as a Squirrel, ADN, which, coincidence, also starts with an S. So, adding another convention to be learnt just to save 1 letter is arguable.