Move constructor

Move({ required int from, required int to, String? promo, String? piece, int? gatingSquare, })

Implementation

Move({
  required this.from,
  required this.to,
  this.promo,
  this.piece,
  this.gatingSquare,
}) {
  if (from == HAND) assert(piece != null, 'Drop moves require a piece');
}