u/Greedy_Shopping_9591

Failed a puzzle, but don't know why...

Failed a puzzle, but don't know why...

Puzzle was: White to move to find checkmate.

Qd7 was the "correct" move, but I can't see why the king can't escape to d5?

Lost a nice little streak here, which is fine, but i'm still confused! (Playing less than 3m, low elo, sorry if it's obvious!)