...usually not. Points wise it's already more (3x2=6 > 5x1=5), but the main rule is that two pieces can coordinate better than one better piece, so in the case of N+B>R. In N+B<Q, this is different, as the Queen can hassle any coordination from the Bishop by controlling diagonals: in short, a Bishop can harass a Rook freely, but not a Queen.

<but a bishop and a knight win against a queen.>

So usually not.

<I really can't understand this game...>

Suppose white wants to struggle on and plays Qg8? -- threatening Qxh7+ ... Black responds Nf8! And now the Queen has _no_ moves. A maximum security prison from which there is no hope of escape.

In exchange for the queen,black has-

two pieces,an open file to work with,a dragon bishop,and an exposed enemy king.

Suppose white wants to struggle on and plays Qa3? -- threatening black's rook ... Black responds RxQ!!! And now the Queen has been captured. A true hoodwink which there is no hope of escape.>

White's problems begin with the move 4.Be3 which is an error. What follows should be understood in the context of Steinitz who wrote that the player with the advantage MUST attack (punish the mistakes of) his opponent. The move is flawed because it defends d4 at the cost of leaving b2 defenseless. Thus, the reply Qb6 is indicated; it adds an attacker to d4 and hits b2. Remember Capa; the basic advantage in chess is the unit that holds two!

White found his best reply with Nc3 where Black can already force White to take a draw after Qxb2. This fact reinforces the conclusion that White's 4th was a mistake else why could Black gain a forced draw so easily? In a way, this is unfortunate since it means no strong White Player will allow this position since they will not want to risk Black forcing this draw after Qxb2.

Now, since White has committed an error and we are trying to punish him, Qxb2 doesn't seem the way to do it. Also, if the opponent ignores your threat it is usually correct to carry out that threat for at least one move. Thus, 5...cxd4 for Black.

Now after 6.Nd5, if you run away with the queen then White simply plays Bxd4 and has an edge. This means that retreating the queen is illogical; White has a disadvantage and must be punished. Once you realize that, 6...dxe3 is easy to find.

For the queen, Black has an ultra safe king, two minor pieces and a pawn plus almost total dark square control (exacerbated by White's failure to even attempt to retain his knight, the only non female piece able to influence the dark squares).

White has a displaced king, development deficit and a horrible white bishop with no active prospects. He is faced with the immediate loss of two more pawns with Bxb2 and so his Queen is confined to defensive duties. One other critical factor to be considered is that White does not have a single effective pawn lever at his disposal. He does not even have the prospect of an active exchange sacrifice to alter the position (only perhaps passive sacs with Rd5 at some future point).

Contrast this with the Black position where since the White b pawn can't move, this pseudo isolates the c pawn and for that, Black has TWO pawns to use as levers against that point. Also, consider the lovely squares Black gets for his minors....e5 e6 c5 c6 or even d4 beckon piece placement.

My post game analysis (as the line I played was logically inspired over the board and not prepared) which I conducted "postal style" over about 20 hours confirmed my judgement during the game.