The missing piece (chess) (Posted on 2008-06-12)

What is the missing piece (marked "?") in this configuration of a normal chess game?

BLACK

WHITE
Notice that the Black King is in check by the White Rook.

See The Solution	Submitted by pcbouhid
Rating: 4.0000 (8 votes)

	Subject	Author	Date
	Thank you	Charlotte	2024-06-04 06:16:56
	re(7): An impossible check?? (partial spoiler)	pcbouhid	2008-06-13 13:04:53
	re(6): An impossible check?? (partial spoiler)	Dej Mar	2008-06-13 12:28:13
	re(5): An impossible check?? (partial spoiler)	pcbouhid	2008-06-13 09:41:32
	re(4): An impossible check?? (partial spoiler)	Dej Mar	2008-06-13 03:02:40
	Oh, now I see (spoiler)	Steve Herman	2008-06-13 00:30:55
	re(3): An impossible check?? (partial spoiler)	pcbouhid	2008-06-12 21:51:07
	solution	Dej Mar	2008-06-12 21:02:11
	re(2): An impossible check?? (partial spoiler)	brianjn	2008-06-12 20:27:35
	spoiler	xdog	2008-06-12 16:46:48
	re: I'm almost there (spoiler)	Steve Herman	2008-06-12 15:46:30
	re: I'm stuck (spoiler)	Steve Herman	2008-06-12 14:02:17
	I'm stuck (spoiler)	Steve Herman	2008-06-12 13:39:47
	re(2): An impossible check?? (partial spoiler)	Charlie	2008-06-12 13:14:13
	re: An impossible check?? (partial spoiler)	Dej Mar	2008-06-12 11:43:33
	An impossible check??	brianjn	2008-06-12 10:48:31