[Event "U.S. Championship"]
[Site "St Louis"]
[Date "2023.10.08"]
[Round "4.2"]
[White "Pourkashiyan, Atousa"]
[Black "Yu, Jennifer"]
[Result "1-0"]
[WhiteElo "2288"]
[WhiteTeam "United States"]
[BlackElo "2294"]
[BlackTeam "United States"]
[Annotator "Davis Zong Jr."]
[Variant "From Position"]
[ECO "?"]
[Opening "?"]
[FEN "q7/Pr1Q1ppk/3B3p/b1p5/3p4/3P3P/5PP1/R5K1 w - - 0 39"]
[SetUp "1"]
[Source "https://lichess.org/study/b0nfXV2i/6tNVmUst"]
[Orientation "white"]
39. Qxb7! { A lot of moves win here, but try to find the queen sacrifice which wins on the spot! } 39... Qxb7 40. Rxa5 Qa8 { Without perpetual threats (White's dark-squared bishop sits perfectly to prevent perpetuals), the queen is helpless. } 41. Bxc5 Kg6 42. Bxd4 f6 43. Be3 Kf7 44. Rb5 { 1-0 White wins. } 1-0