Although uncommon, many professionals feel that the 5-Piece is useful as there is a very large difference between 4-Piece and 6-Piece handicaps according to Kaufman.
White is more free to focus on the right side of their board compared to the 6-Piece handicap since White's left camp has a stronger defense due to the addition of the left knight.
Similarly, the knight also protects the edge at 13 and does not require an immediate defense if Black's bishop is positioned to attack along the 79–13 diagonal (targeting the 13 square).
Therefore, White's left silver and gold are more available to defend toward the center of the board.
White pushes their eighth file pawn forward in order to make way for their right gold.
Black will develop an Opposing Rook attack up the eighth file, which the pawn push prepares for.
White pushes the sixth file pawn to prepare for an attack on the head of Black's bishop.
Black advances their central pawn in order to give their bishop a path of retreat (the 57 square) from White's encroaching pawn while still maintaining pressure on the right edge of White's camp.