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Stockfish says my tactic is bad.

lichess.org/lXaL1yc4/

Hey guys. I don't know why but, after 15. Nxe3, Stockfish still shows +2.2

Can anyone explain why? All I can think of is the value of the three minor pieces potentially lost vs the value of the queen, but black should still be better, no?
I thought it is common sense that 3 minor pieces outweigh the Queen, let alone the two bishops. At least some pawns as compensation for Black.

The value of the Queen is not infinite as some weaker players tend to think apparently.
So after the trades, would you say that white has an easy position?
position being easy or not has nothing to do with the evaluation
You see, the value of two knights and a rook is 11 points, which is more than the combined value of a pawn and a queen, which is `10 points. So what you have done here is akin to exchanging two rooks for a queen.
Try playing the same tactic against Stockfish and see which is worth more: a queen, or a rook and two bishops.
The rook is a major piece.

And the extra pawns don't count for much at this stage. You have no passed pawns, your pawns don't control any important squares nor do they block white's bishops or have any ability to kick his knight away from its outpost on e3. The isolated pawn on e4 is probably going to fall in the next few moves.
white is piece up (+3-1= ( Rook +bishop vs Queen) +2)
or white have extra major piece
notice white have bishop pair( white exchange piece to win quickly bishop pair is not so impormant at this position ) white can play kg1 again
White should always win this, though the win is far from easy.
You can think of a queen as a rook and a bishop in 1 piece. So it is obvious that R+B+B > Q.

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