// A click to promote a piece on subTurn 2 would trigger this.
// For now it would then return [NaN, NaN] because surrounding squares
// have no IDs in the promotion modal. TODO: improve this?
// A click to promote a piece on subTurn 2 would trigger this.
// For now it would then return [NaN, NaN] because surrounding squares
// have no IDs in the promotion modal. TODO: improve this?