I lost a game today, because a pawn was automatically promoted to Queen, when the winning piece was a Knight. How does one choose which piece you want?
It's easy to miss, but if you're on a computer, here's how to see what it looks like.
1. Go to one of your games where it is your move.
2. Make an illegal pawn move to the 8th rank with any one of your pawns.
3. Watch for a new little window to open under the 'submit move' button.
You will see in the window that you can use the default option to promote to a queen, or you can change it to another choice before you submit your move.
It would be nice to make this little window more noticable, but it is there.
I did just test it on an iphone and it works great! A big window pops up over the board and you are required to make a selection at that time. It's a nice big 'in your face' window and it would be nice if the computer mode did it that way too!