When you're winning on material, every trade of PIECES makes your win simpler: complexity is where comebacks live, and each swap removes tricks, tactics, and counterplay while your extra material grows relatively bigger. An extra knight in a queen middlegame is an edge; the same knight with only kings and pawns left is the whole game.
The refinement worth memorizing: trade pieces, not pawns. Your extra material eventually wins by promoting a pawn, so you want pawns ON the board and enemy pieces OFF it. Losing players want the opposite, chaos and heavy pieces, which is exactly why you shouldn't give it to them.
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White is a full rook ahead, and Black's queen is the only piece keeping any hope alive.
You're a rook up. Kill the counterplay.
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