recursion.dart

List<Checkers> continuedCapture(Point source, List<List<Point>> moves) {
    Checkers refBoard = this;
    List<Checkers> boards = [];
    for (List<Point> capDiagonal in moves) {
      Checkers childBoardCap = refBoard.cloneGame();
      List<List<Point>> newCaps =
          childBoardCap.executeCapture(source, capDiagonal);
      newCaps = childBoardCap.kingAfterMove(capDiagonal[1])
          ? childBoardCap.captureSequences(capDiagonal[1])
          : newCaps;
      if (newCaps.isEmpty) {
        boards.add(childBoardCap);
      } else {
        Point newSource = capDiagonal[1];
        boards.addAll(childBoardCap.continuedCapture(newSource, newCaps));
      }
    }
    return boards;
  }