Queen = bishop + rook, so why is it 9 points?

Last time I checked 3 + 5 = 8

both diagonals

I think a bishop can also do both diagonals

3.7268739 + 5.2731261 = 9.

The fact that a queen can act like a bishop and a rook at the same time gives it more power that a rook and bishop operating separately

A queen should really be 12, as it is basically a Rook + both bishops, and all operating at the same time.

Exactly

@Laskersnephew is spot on.

Another thing I'd like to add is that all material "points" are simply estimates. The value of pieces constantly change based on the exact position; in one position, I might sacrifice a Queen and both Rooks and the objective material doesn't matter because my line forces checkmate, but in a different position, I might lose a single pawn and just be lost. Use the traditional point values as estimates and go from there without getting fixated on exact point values.

pawn = 1 point

Knight = 3 points

Bishop = 3 points

Rook = 5 points

Queen = 9 points

King = invaluable because losing it by checkmate ends the game

In terms of movement I'd give the king like a 2 or 2.5, maybe even a 3 as it can move to as many squares as the knight and is extremely useful in the endgame.

In terms of movement, the King tends to be worth about a piece (3 points) I'd say in many positions such as when the King is cut off to the backrank. However, there are some endgame studies in which the lone King fends off 4 pawns when in particular configurations, but I think this is more of a situational rarity than something practical enough I'd use for most positions evaluation. Studious chess players tend to value the King (movement wise) somewhere between 2.5 and 4.5 points, but roughly 3 points is what I hear most often.

cuz the queen can go anywhere faster where it takes those bozo pieces 2 moves to do it

It's because you only need one queen move to move the entire power of a bishop and a rook. As separate pieces it takes 2 moves to move their entire power. Another thing is that the bishop's power is limited by the fact that it can only be on one color square for the entire game. The queen can be on both color squares.

Perhaps the answer is that a queen is worth 9 points, and is ≠ to a rook and bishop?

You can't normally stack a Bishop and a Rook on the same square.

Hi

The queen can switch between travelling on light squares and dark squares along with travelling on straight paths to move across the boards and it has the power to capture pieces across squares in either of the ways which gives it a vast positional advantage

The stock value of the pieces is useful as a general guide to help players understand the innate potential that piece can have in a game, however, as one becomes more advanced they learn that pieces have a relative value not an absolute value- they can shift during a game and the actual pieces themselves may not express the value they have in a position alone. Specific piece layouts and certain squares may influence their value in a minor or major way. The value of the queen is significant, it has the greatest movement capabilities in chess so it’s value is significantly higher than other pieces. What stock value you want to assign it is more or less meaningless as anyone should understand its movements make it the strongest piece in the game.

Boa noite

The Queen is a bishop + rook + pawn = 9

Bishop + Rook + Pawn = 9