Locked (Custom Position)

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Position created by @RALRAL3333

Position description: In this position, each side's pieces are locked up with minimal possible moves, so at least 1 sacrifice is required. White has an extra piece, but white must sacrifice it. The center is also very much blocked off. As it is hard to bring pieces across the board, after a sacrifice, the idea of promoting pawns also comes into play as well as the idea of taking the opponent's center pawns