void ResetBoard()

in Games/Fifteen/GamePage.xaml.cs [141:188]
43 lines of code
10 McCabe index (conditional complexity)

        void ResetBoard()
        {
            PlayAgainText.Visibility = Visibility.Collapsed;
            _gameOver = false;
            _numMoves = 0;
            MoveCountTextBlock.Text = _numMoves.ToString();
            for (int i = 0; i < _boardSize; i++)
            {
                for (int j = 0; j < _boardSize; j++)
                {
                    _buttons[i, j].Content = ((i * _boardSize) + j + 1).ToString();
                }
            }

            _buttons[_boardSize - 1, _boardSize - 1].Content = "";
            _blankRow = _boardSize - 1;
            _blankCol = _boardSize - 1;

            int shuffleCount = 500;
            Random rnd = new Random();
            while (shuffleCount > 0)
            {
                bool changeRow = rnd.Next(0, 2) == 0;
                bool decrement = rnd.Next(0, 2) == 0;

                int row = _blankRow;
                int col = _blankCol;
                if (changeRow)
                {
                    row = decrement ? row - 1 : row + 1;
                }
                else
                {
                    col = decrement ? col - 1 : col + 1;
                }

                if ((row < 0) || (row >= _boardSize) || (col < 0) || (col >= _boardSize))
                {
                    continue;
                }

                if (SwapBlank(row, col))
                {
                    shuffleCount--;
                }
            }
            GazeInput.SetInteraction(GameGrid, Interaction.Enabled);            
        }