Fun little game, UI wise I would def just show which piece the player already moved or not (easy as darkening the pieces already moved). Having to move every piece, it's easy to lose track. Also i get that the pawns dont promote, but I still have to click on them to finish my turn when they cant even move?

The pawns can take by jumping two steps (which isnt possible in chess).

Some visual transitions would be nice (like when the wave comes, or to know if I still have to click somewhere or not).