The Smart One-Click Move-Input allows you to make your moves during training much faster.
Once activated you only have to click on the target square during a training session. Then the program will evaluate, if it is the target square corresponding to the correct candidate move. In this case the program treats your click like you made the correct move on the board; otherwise it will be considered as wrong.
Note that you can’t drag & drop a piece anymore when this mode is activated. If you try to do it nonetheless the square of the piece you try to drag is interpreted as the target square, which will be wrong.
Sometimes more than one piece can move to the same target square and maybe you had a different one in mind when you clicked on the target square. In order to simplify the process, the program does not care of this detail. In practice it should not matter as you will see the move the program was expecting anyway.