Position from the game Zhongyi Tan vs Aleksandra Goryachkina, Semifinals of the World Cup 2023 Women’s Section
Solution
Bb4!
If white responds with Rxb4, black can simply promote with a discovered check b1=Q+, and captures the rook on the next move.
If white doesn’t take the bishop, black can safely promote the pawn because it is covered by the bishop.
I think if you do that white has a path to victory. You lose the bishop, still can’t queen your pawn, and white can now pressure your king position.
The move here is genius because it literally locks up the game.
Not arguing - I truly want to understand. Black risks the bishop either way, and white can also check the black king either way, n’est-ce pas?
Is it b2b1?