Two things to note:

1) Alpha Zero beats AlphaGo Zero and AlphaGo Lee and starts tabla rasa

2) "Shogi is a significantly harder game, in terms of computational complexity, than chess (2, 14): it is played on a larger board, and any captured opponent piece changes sides and may subsequently be dropped anywhere on the board. The strongest shogi programs, such as Computer Shogi Association (CSA) world-champion Elmo, have only recently defeated human champions (5)"