Do Not Centralize King in Queenless Middlegames
The King is not very safe in a “Queenless middlegame”, also called a “semi-ending”. These are endgames where the Queens have been swapped off, but there are still rooks and other minor pieces about. The King can still get mated in the middle of the board by enemy pieces, such as by two rooks, or a rook and a couple of minor pieces, so the King probably should still stay at home. Hence, these endgames are exceptions to the general rule of “centralize the King in endgames”.
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