That's a very interesting skewer tactic that makes Waitzkin win the game. Skewers like that are very rarely seen in the endgame. white actually first promoted his pawn to a queen. Only then black did and also made a skewer on the king and queen.
The last moves in the final game in Searching For Bobby Fischer
no, i think what the coach called a mistake was bringing the queen out. this is where josh offers the other kid a draw before beating him.
I love Searching for Bobby Fischer!