that's pretty awesome. So you basically tell the piece that you intend to promote it in a few moves and it instantly promotes itself?
The real killer would be if it remained a queen when you cancel the further premoves that would have promoted the pawn. instant queening!
Not sure where to post this but here it goes. This may be solved in the last 24 hours, but yesterday, when I played a game, I think I saw something which might be a bug.
when you move a pawn up the board till promotion as a series of premoves when it's your opponent's turn, after your opponent makes his move, your pawn looks as if it's promoted right away.
for example, it's black to move. I'm white. and white has a pawn on h5. when I push my pawn to h6, then to h7, then to promotion (all in the same turn, when my opponent's clock is ticking), and black plays, let's say Kc4, instead of my h pawn appearing on h6, it immediately appears as a queen on the board. then black plays Kc5 let's say, again, my pawn appears as a queen, etc.