Why this is the best move?

Question

I'm new here, so I just like chess and I don’t study too deeply. I could not understand the move Qxe5. Can someone explain to me?

Answer 1

The move exploits three things: 1. The black knight on f4 is trapped and will fall. 2. The black pawn on d6 is pinned. 3. The black King is trapped behind its own pawns allowing the threat of a back-rank mate.

1. Qxe5 dxe5 2. Rxd8+ Qf8 3. Rxf8+ Kxf8 and White has stolen a pawn
2. Qxe5 Qxb3 2. Rxd6 and White has a lovely game

Answer 2

This is the best move because if the pawn on D6 were to take the Queen, the following move would be to checkmate with the D2 rook.