[Event "2023 U.S. Senior Chess Championship"] [Site "Saint Louis, United States"] [Date "2023.07.22"] [Round "7.4"] [White "Root, Douglas"] [Black "Dlugy, Maxim"] [Result "1-0"] [WhiteElo "2469"] [BlackElo "2524"] [Annotator "FM Alex King"] [Variant "From Position"] [ECO "?"] [Opening "?"] [FEN "3rr1k1/pp3pb1/nqppbnpp/8/2P1PP1B/2N5/PPN1B1PP/R1Q2R1K b - - 0 15"] [SetUp "1"] [Source "https://lichess.org/study/ZBuAQUT7/ezzOjqR6"] [Orientation "white"] { [#] } 15... Qa5? (15... Bc8 { was the right decision, avoiding White's reply in the game. }) 16. f5! gxf5 17. exf5 Bc8 (17... Bxf5 18. Nd4 { and Black will lose a piece on f5 or f6. }) 18. Bxf6 Bxf6 19. Qxh6 { White has won a pawn with a winning attack to boot. } 19... Bg7 20. Qh5 Re5 21. Nd4 Rde8 22. Rf4 Qd8 23. Nf3 Rxe2 24. Nxe2 Rxe2 25. f6! Bxf6 26. Ng5! Be6 (26... Bxg5 27. Qxf7+ Kh8 28. Qh5+ Kg8 29. Qg6+ Kh8 30. Rf7 Qg8 31. Qh5+ { and mate. }) 27. Qh7+ Kf8 28. Qh6+ Ke8 (28... Bg7 29. Nxe6+ Rxe6 30. Qxe6 { and White wins. }) 29. Rxf6 Bxc4 30. Rxd6 Qa5 31. Qh8+ Ke7 32. Qf6+ Ke8 33. Qh8+ Ke7 34. Qf6+ Ke8 35. b4 Nxb4 36. Nh7 { Faced with the deadly threat of 37. Qh8+ Ke7 38. Qf8#, Dlugy resigned. } 1-0