I might modify the Interactive Diagram in the comment I am replying to to support multiple piece sets and boards, but since it is from 2016, and you indicated some issues with how it handles King moves, I was first wondering if it would benefit from any improvements that have been made to Interactive Diagrams in the nine (technically 8.5) years since it was made.
I might modify the Interactive Diagram in the comment I am replying to to support multiple piece sets and boards, but since it is from 2016, and you indicated some issues with how it handles King moves, I was first wondering if it would benefit from any improvements that have been made to Interactive Diagrams in the nine (technically 8.5) years since it was made.