Puzzle Number 60017 - update solution

link to the puzzle : http://en.lichess.org/training/60017
my solution is : 1...Qh3+ 2.Kg1 f3 3.Rxg7+ Kxg7 4.Re7+ Kf6 5.Rg7 Kxg7 6. Bf8+ Kxf8
and the "correct" solution is 6.Bf8+ Kf7
There is no difference between them and I lost points for no reason, hope you will correct it to prevent others from the same mistake.
Thanks.

It is not possible to change solution(s) of puzzles.

It is a stalemate.