A sharp draw in Frehch Defence (Gonnosuke vs LydiaBlonde

Gonnosuke vs LydiaBlonde, concluded 15th May. He is one fo top-ranked players here (>2300). I was black, and fe played French defence (1. e4 e6 2. d4 d5), Tarasch variation (3. Nd2). I played very sharp 8... g5!? He offered a sacrifice of a bishop for an attack (21. Bxg5), I declined and sacrificed two pawns for my own attack. He defend themself well, and at the end I need to be nimble to find tactical motives for a draw. I published last week in the forum two moments from the game as a puzzle (A nice tactic for a draw! and A quiet move after a sacrifice).

 The game isn't finished yet! You have a position after 33th move of white. Which is the best move for black? I submited it in the forum as a puzzle: A quiet move after a sacrifice). When you solve it, you can see a continuation and the end of the game, with the second puzzle, in the topic A nice tactic for a draw!