I interpret the question as follows
How can a player arrive at ...Bh3?
This is tightly connected to the point behind ...Bh3. With a material advantage, black is clearly looking for a win. Yet, it is well known that opposite colored bishops give the defending side a strong chance to draw. Thus, precise play is required.
Black's plan is
Get the king to ...
What a great endgame to analyze!
Where should I start with???
What was the point of Shirov's 47…Bh3?
We know that 3 healthy pawns win against a bishop in endgame.
Tablebases show the following endgame as won for Black , if it is his turn to move, by playing Kf5 ( the only winning move!) :
[fen "8/8/4kp2/3p4/p7/2B5/8/6K1 b - - 0 1"]
The game Lasker - Thomas, Lasker could have ended with a castling checkmate, but instead he played “18.Kd2#.” Some versions of that game I've seen may have ended with “18.O-O-O#.”
[Title "Edward Lasker-George Alan Thomas, London, Casual Game, 10/29/19"]
1. d4 e6 2. Nf3 f5 3. Nc3 Nf6 4. Bg5 Be7 5. Bxf6 Bxf6 6. e4 fxe4 7. Nxe4 b6 8. Ne5 O-O 9. Bd3 ...
I am tempted to say "agreeing to continue the match after Fischer's protests!" which some argue was a key psychological defeat. If you're looking for specific moves that were mistakes, there are a few candidates. I haven't looked at all annotations, but have Kasparov's My Great Predecessors, vol 4 handy and looking over his notes, it would be either (...
I found a game where castling takes place on the 40th move in a postion that is truly that of an endgame. Tim Krabbe lists as the 103rd most fantastic move in chess history.
[Title "Viktors Pupols-Jerald Meyers, Lone Pine California USA, 3/13/1976"]
1.d4 Nf6 2.Nf3 c5 3.d5 g6 4.c4 b5 5.cxb5 a6 6.bxa6 Bxa6 7.Nc3 Bg7 8.Bg5 h6 9.Bd2 O-...