[pas]

How does AlphaZero handle the Knight in chess?

[YeGoblynQueenne]

There's a vector encoding "queen moves" and another encoding "knight moves". Between them, they cover all possible chess moves. Knight moves obviously are modelled by "knight moves".

Edit: https://arxiv.org/pdf/1712.01815.pdf

The information you want is on page 13, last paragraph. The previous paragraph describes the representation of the boardd.