chess - Swapping rooks in a 4x4 board - Puzzling Stack Exchange

You have a 4x4 chessboard with four black rooks on the top and four white rooks in the bottom. Your goal is to swap these rooks using the minimum number of steps. It does not matter which rook is

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chess - Swapping rooks in a 4x4 board - Puzzling Stack Exchange

On an 8x8 chessboard, a pawn has been placed on the third column