Puzzle 29950 wrong

In this training puzzle Qe1 solves the problem and it consider this movement as a blunder!

Kxe1

Link to the puzzle for the curious? lichess.org/training/29950

SPOILER BELOW

You mean on the first move? Qe1 crops up on the third move of the puzzle.

If so, the answer is no, because Kxe1 and you just sacrificed your queen for nothing.

Haha Sollerman, beat me to it. :) Should probably refresh pages more often and not open so many tabs at once!

sorry...