Rook

How many can guess how many points a rook's worth?

 NOPE! You're .4 off.

That's true I'm sure, but I was doing Chess Mentor, and it said that according to "modern theory" It's just worth 4.5 points instead of five.

At the start of the game 4.6

During the middlegame 5.0

During the endgame 5.4

Kxe2 in the first diagram.  Never give up hope!

But, can you mate a person with knights?  I know you can place the pieces in a mating position, but can you force it?

(Back on topic) Depends who you ask. It is usually somewhere near 5 if the pawn is 1.

I was talking about in general. Depending the position, any piece can be useless. 

@propoganda

I'm talking about king vs king and knights.  No pawns.  I will examine the three knights situation soon, and get back to you on that.

I think it might be worth two meals.

I'll see your three and raise you two.  :b

Three knights and king versus a lone king is a reasonably well-known "just for kicks" mate. Excluding the small number of starting positions which are already stalemate (I'm not sure if it's possible to set up a forced-stalemate initial position in this endgame...worth a thought), it's always possible to force a mate with the knights.

Or as Elmer Fudd would say,  "Wook."

But you can mate with a wook, and a king.

Ok, I agree with the knight mate.  However if I got a promotion, I would get a queen of rook.

That was two pawns and a queen.