Could someone help me understand why Fischer resigned this game? He seems poised to capture either the A or H pawn, so I'm wondering why he figured the game was lost. Also, what is the point of 21. KH1?
In the final position, 73. ... Re8 wins a piece.
21. Kh1 : to get off the Rook's file? Avoiding ... Nf4, perhaps?
Could someone help me understand why Fischer resigned this game? He seems poised to capture either the A or H pawn, so I'm wondering why he figured the game was lost. Also, what is the point of 21. KH1?