Follow a four-step process to make an assisted checkmate with a queen.
1. Place your queen one knight move away from the opposing king.
2. Copy each king move with your queen to stay one knight move away.
3. When the opposing king reaches the edge of the board move the queen to the 2nd rank or file from the edge to keep the king stuck. Make sure to give the king at least two squares to move, so that there's no stalemate.
4. Use your king and queen to make an assisted checkmate.
