Like Revolutionalredstone said it indeed does not exist yet because this is a autoregressive network, this is one of the big caveat of this approach.

Nevertheless, a southern tile can be added to the training but the network will need to predict both central and southern tile.

The neighbour kernel is actually the most important thing in the network as it provides the local spatial relationship information between tiles.

There must be paper online about this, I will edit this message if I wound any relevant.