GR.Gambling.Backgammon.Board.SetFinished C# (CSharp) Method

        public void SetFinished(int player, int count)
        {
            finished[player] = count;
        }

        public static Board BoardFromPositionID(string position_id, ref string error)
        {
            Board board = new Board();

            error = "";
            if (position_id.Length != 14)
            {
                if (position_id.Length < 12)
                    error = "Position ID length too short.";
                else
                    error = "Position ID length too long.";
                return null;
            }

            List<bool> bits2 = new List<bool>();
            List<bool> bits = new List<bool>();
            foreach (char c in position_id)
            {
                if (!base64.Contains(c))
                {
                    error = "Position ID contains an invalid character.";
                    return null;
                }

                int dec = base64.IndexOf(c);
                for (int i = 5; i >= 0; i--)
                {
                    bits.Add((powers2[i] & dec) == powers2[i]);
                    //bool bit = (powers2[i] & dec) == powers2[i];
                    //Console.Write(bit?1:0);

                    if (bits.Count == 8)
                    {
                        bits.Reverse();
                        bits2.AddRange(bits);
                        bits.Clear();
                    }
                }
            }

            int total_chequers = 0;
            int slot = 0;
            int player = 0;
            foreach (bool bit in bits2)
            {
                if (bit)
                {
                    if (slot == 24)
                        board.IncreaseCaptured(player);
                    else
                        board.AddToPoint(player, slot, 1);

                    total_chequers++;
                }
                else
                {
                    slot++;
                }

                if (slot == 25)
                {
                    board.SetFinished(player, 15 - total_chequers);

                    player = 1 - player;
                    total_chequers = 0;
                    slot = 0;
                }
            }
            //Console.WriteLine(board.ToString(0));

            return board;
        }