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this is already checkmate with the second move

Yes excellent. You are correct. I didn't noticed that 2. thing at first

  1. Qg4+ -- B * Qg4
  2. Bf7
я, если решаю, обычно не указываю в ответах начало, чтоб другим было интересноI, if solve, usually do not indicate the beginning in the answers, so that others would be interested

Thank you very much for the suggestion. Highly appreciated !

Hello,
I do not speak English.

♕g4+ -- ♝xg4 only
♗f7++

Suggestions:
1- Wait for others to think
2- 14 hours is a very short time. At least some days is better
3- Chess symbols in Unicode [https://en.wikipedia.org/wiki/Chess_symbols_in_Unicode]

;-)

You got the answer !
And thank you soo much for the suggestions ! Highly appreciated !