Loading
Swap the white and the black figures.
wap the black and white knights in the fewest moves
Swap the white and the black figures.
Swap the white and the black figures.
You Win!
If we draw an imaginary horizontal line exactly through the middle of the board, the top half would remind the castle's battlement, while the bottom one - its reflection in the surrounding moat's waters.
Four empty cells out of the 12 total will present enough challenge to overcome the tightness of the moves. But don't give up just yet. Stay persistent and and unleash all your logical reasoning, creativity and analytical skills to conquer this fortress and solve its encompassed chess problem.