77...Nb5! [Eltaj tries to exploit the vulnerable White's king position.]

78.Be4?! [78.Ke4 Nd6+ 79.Kf4 Ra3 80.Bf1 Ra4 81.Kf3 Nf5 82.d5 Ra3+ 83.Kg2 exd5 84.Rxd5 Rxg3+ 85.fxg3 Ne3+ 86.Kf3 Nxd5³ and a draw is the most likely result.]

78...Nxd4! [△e5]

79.Rd3 Rb2! [The rooks should be retained on the board!]

80.g4? [80.Ke3 Nc2+ 81.Ke2 Ke5 82.Bf3 Nd4+ 83.Kf1 Nb3-/+]

80...e5+! 81.Kg3 hxg4 82.Ra3 Nf5+ 83.Kxg4 Rxf2–+ 84.Ra6+ Kg7 0–1

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⚪️#50 (Strategy-White to Move)
🔸Yu,Yangyi (2765)
🔸Vera Siguenas,Deivy (2494)
🔸Olympiad 2018 Batumi

26.Rf7!! [White apparently intends to attack the Black's king, but how can he bring his pieces into the action?]

[26.Bb4 c5 27.dxc5 Nd7 28.Rf7 Rc8 29.c6 Ne5 (29...Nf8 30.Rxg7 Kxg7 31.Bc3+ d4 32.Bxd4+ Qxd4 33.exd4+–) 30.Rxg7 Rxg7 31.Rf8+ Qxf8 32.Bxf8 Rxf8 33.Qg3+–; 26.b4 dxc4 27.Rf7 c3 28.Nb7 Qb6 29.R1f2+–]

26...Qxa5 27.Bd6!? [White missed a brilliant combination.]

[27.Rxg7!! Rxg7 (27...Kxg7 28.Qh4!! The beautiful point of sacrificing the rook. 28...Qd8

a) 28...Qxa3 29.Qf6+ Kh6 30.Bf3! c5 31.g5#;

b) 28...Nd7? 29.Rf7+! Kxf7 (29...Kh8 30.Rxh7#) 30.Qe7#; 29.Be7 Nd7 30.Bxd8 Raxd8 31.Qe7+ Kh8 32.Rf7 Nf8 33.Qf6+ Rg7 34.Qxg7#) 28.Rf8+ Rg8 29.Qh6! Nd7 (29...Qe1+ 30.Bf1 Nd7 31.Rf7 Nf6 32.Bd6 Qf2+! 33.Kxf2 Nxg4+ 34.Kg1 Nxh6 35.Be5+ Rg7 36.Rxg7 Ng4 37.Rxa7+ Nxe5 38.Rxa8+ Kg7 39.dxe5 Bb7 40.Ra7+–) 30.Rf7 Nf6 31.Bd6! dxc4 32.Be5 Qxe5 33.dxe5+–]

27...Qd8 28.R1f3! g5 [28...Qg5 29.Bf4 Qd8 30.Qxh7+ Kxh7 31.Rh3+]

29.Qh5 [29.Qh5 Nd7 30.Rh3 Nf6 31.Rxf6+–] 1–0