mobile than the rook and the bishop, as the entire power of the queen can be transferred to another location in one move, while transferring the entire firepower of a rook and bishop requires two moves, the bishop always being restricted to squares of one color. Second, unlike the bishop, the queen is not hampered by an inability to control squares of the opposite color to the square on which it stands. A factor in favor of the rook and bishop is that they can attack (or defend) a square twice, while a queen can only do so once. However, experience has shown that this factor is usually less significant than the points favoring the queen. The queen is strongest when the board is open, the enemy king is poorly defended, or there are loose (i.e. undefended) pieces in the enemy camp. Because of its long range and ability to move in multiple directions, the queen is well-equipped to execute forks. Compared to other long range pieces (i.e. rooks and bishops), the queen is less restricted and stronger in closed positions. Strategy A player should generally delay developing the queen, as developing it too quickly can expose it to attacks by enemy pieces, causing the player to lose time removing the queen from danger. Despite this, beginners often the queen early in the game, hoping to plunder the enemy position and deliver an early checkmate, such as Scholar's mate. Early queen attacks are rare in high-level chess, but there are some openings with early queen development that are used by high-level players. For example, the Scandinavian Defense (1.e4 d5), which often features queen moves by Black on the second and third moves, is considered sound and has been played at the world championship level. Some less common examples have also been observed in high-level games. The Danvers Opening (1.e4 e5 2.Qh5), which is widely characterized as a beginner's opening, has occasionally been played by the American grandmaster Hikaru Nakamura. A queen exchange often marks the beginning of the endgame, but there are queen endgames, and sometimes queens are exchanged in the opening, long before the endgame. A common goal in the endgame is to promote a pawn to a queen. As the queen has the largest range and mobility, queen and king vs. lone king is an easy win when compared to some other basic mates. Queen and king vs.