Queen sacrifice

	a	b	c	d	e	f	g	h
8									8
7									7
6									6
5									5
4									4
3									3
2									2
1									1
	a	b	c	d	e	f	g	h

White to move. White can checkmate with a sham queen sacrifice as follows: 1.Qh7+ Kf8 2.Qh8+ Nxh8 3.Rxh8#

In chess, a queen sacrifice is a move that sacrifices a queen, the most powerful piece, in return for some compensation, such as a tactical or positional advantage.