>ChessCoach starts with 109 input planes; that is, a collection of 109&nbsp;×&nbsp;8&nbsp;×&nbsp;8 ones and zeros. The last 8 positions supply 13 planes each for pieces and repetitions, and 5 additional planes are included for castling rights and the 50-move rule. At each layer in the network, convolutions slide 3&nbsp;×&nbsp;3 filters over the 8&nbsp;×&nbsp;8 chess board. However, a large amount of data needs to be gathered; for example, in the early stage, features such as &quot;my pawns are lined up&