29...hxg3! [The most accurate move to continue the attack. Adams clears the h4–square for his knight.]

30.fxg3 [Recapturing with the other pawn would be bad: 30.hxg3 Nh4+ 31.Kh3 Nf3–+]

30...Be3! [30...Rxc1! is just as good: 31.Qxc1 Be3 32.Qc2 Qg4 33.Nc1 Bxc1 34.Rxc1 Nf4+ 35.Kg1 Ne2+ 36.Kf2 Nxc1 37.Qxc1 Rd3–+]

31.Rxc4 bxc4 32.Nf2 Nf4+! 33.Kh1 Nd3!? [33...Bxf2! 34.Qxf2 Nd3 35.Qd2 Qxd2 36.Bxd2 Nxb2–+]

34.Nxd3 cxd3 35.Qd1 d2 36.Bc3 Qg6! 0–1

⚪️#70 (Strategy-White to Move)
🔸Tersinsev,Andrey (2194)
🔸Sanchez,Sebastian Felipe (2424)
🔸Olympiad 2018 Batumi

20.b6? [White should have occupied the d6–outpost with his rook and in addition to holding the pawn on e5, it limits opponent's mobility.]

[20.Rd6! Nd5 (20...Bf8?? 21.Nge4 Nh7 22.Rc1 Bxd6 23.Nxd6 Rf8 24.Nce4 Qd8 25.Qh6 b6 26.Nf6+ Ndxf6 27.exf6 Nxf6 28.Ne4+–) 21.Nxd5 exd5 22.Rc1 Qxd6 (22...Qb8 23.Nxh5 gxh5 24.Bxh5 Re7 25.Qg5 Kf8 26.Rf6 Nxe5 27.Rxf7+!! Nxf7 (27...Rxf7 28.Qd8#) 28.Qxg7+ Ke8 29.Bxf7+ Rxf7 30.Re1+ Kd8 31.Qxf7+–) 23.exd6 Bxb2 24.Rc2 Be5 25.Qg5 Nf8 26.f4 Bxd6 27.f5 Be7 28.Qh6 Bxf5 (28...h4 29.Nh5 gxh5 30.f6 Bxf6 31.Qxf6+–) 29.Nxf5 gxf5 30.Qxh5 Rac8 31.Rxc8 Rxc8 32.Qxf5 Rc1+ 33.Kf2 Bc5+ 34.Kg3 Rc3+ 35.Bf3 Ne6 (35...d4 36.Kg4 Ne6 37.Bd5 b6 38.Bxe6 fxe6 39.Qxe6+ Kg7 40.Qe5+ Kg8 41.Qd5+ Kg7 42.h4+–) 36.Qxd5 b6 37.a4+–; 20.Rab1 Qxe5 21.Qf3 Qc5 22.Nge4 Qe7 23.Nd6 Rd8 24.Qe3 b6 25.Bf3 Rb8 26.Na4²]

20...Qxe5 21.Qc1 Qc5 22.Nb5 Qxc1 23.Raxc1 Nxb6?! 24.Nc7 Bd7 25.Nxa8 [25.Bxf6 Bxf6 26.Ne4 Be5 27.Nxa8 Rxa8 28.Rc5 Bb2 29.Rb1 Bxa3 30.Rc7 Bc6 31.Rxc6 bxc6 32.Rxb6²]

25...Rxa8 26.Bxf6 Bxf6 27.Rb1 Nd5 28.Ne4 Be7 29.Rxb7 Bc6 30.Rxe7? [30.Rbb1 Bxa3 31.Bc4µ]

30...Nxe7 31.Bf3 Rb8 32.Rc1 Kg7 33.Kf1 Rb3 34.Ra1 Bd5 35.a4 Rb4 36.Nd2 f6 37.Bd1 Nc6 38.Rc1 Nd4 39.Rc5 Rb2 40.Nf3 Rb1 41.Ke1 Nxf3+ 42.gxf3 Bxf3 43.Rc7+ Kh6 44.Rd7 Kg5 0–1

⚪️#70 (Endgame-‌White to Move)
🔸Lopez Martinez,Josep Manuel (2581)
🔸Zajic,Milan (2497)
🔸World Chess Olympiad 2018 Batumi

39.Re7! [39.Rc7 f4 40.gxf4 gxf4 41.Re7 Rb4 42.a5 Rxb5 43.a6 Rb1+ 44.Ke2 Rb2+ 45.Kf3 Rf2+ 46.Kg4 Ra2 47.Kxf4 Rxa6 48.Rxe3; 39.Ra6 f4 40.gxf4 gxf4 41.Rf6 Rb4 42.b6 Kg7 43.Re6 Kf7 44.Re5 Rxb6 45.Rf5+ Ke6 46.Rxf4=]

39...f4 [39...Rb1+ 40.Ke2 f4 41.gxf4 gxf4 42.Re4 Rb2+ 43.Kf3 Rf2+ 44.Kg4 Ra2 45.b6 e2 46.b7 Rb2 47.a5 Rxb7 48.Rxe2 Rf7 49.Kf3 Rf6 50.Re4 Rc6 51.Rxf4 Rc3+ 52.Kg4 Ra3 53.Rf5 Kg7 54.h4 Kg6 55.h5+ Kg7 56.Kf4+–]

40.gxf4 gxf4 41.Re4 Rf2+ 42.Ke1 Kg7 43.b6 Kg6 44.Re5 Ra2 45.b7 f3 46.Rxe3 Rb2 47.Re7 Kf6 48.Rh7 Ke5 49.a5 Kf4 50.a6 Rb1+ 51.Kd2 f2 52.a7 Rd1+ 53.Kc3 Rc1+ 54.Kd4 Rd1+ 55.Kc5 Rc1+ 56.Kd6 Rd1+ 57.Ke7 Re1+ 58.Kf8 1–0

⚪️#71 (Strategy-White to Move)
🔸Yamada,Kohei (2128)
🔸Grigorchuk,Sergey (2288)
🔸Olympiad 2018 Batumi

Unity Chess Strategy Multiple Choice 71
public poll

B)f4 – 5
👍👍👍👍👍👍👍 42%
Gavin, @YaminiG, @Sophia_Peng, @WataxPin, Matthew

C)Rab1 – 4
👍👍👍👍👍👍 33%
@SteveWongso, @Kasra_Germany, Alexander, @arash22_d

A)Ng5 – 3
👍👍👍👍 25%
@mahyarebrahimi1983, Dariush, @RichardPeng

👥 12 people voted so far.

⚪️#71 (Endgame-‌White to Move)
🔸Deac,Bogdan-Daniel (2594)
🔸Issa,Rafat (2388)
🔸World Chess Olympiad 2018 Batumi

Unity Chess Endgame Multiple Choice 71
public poll

C)Be3 – 6
👍👍👍👍👍👍👍 40%
@mahyarebrahimi1983, @shahramabdo, @MohamadAsp, Dariush, @abas2048, @arash22_d

A)Rd8 – 5
👍👍👍👍👍👍 33%
Gavin, @YaminiG, @RichardPeng, @Raahmaanii_hossein, Matthew

B)Kf3 – 4
👍👍👍👍👍 27%
@SteveWongso, Alexander, @Sophia_Peng, Atharva

👥 15 people voted so far.

2nd September, 1971. The Canadian Open tournament in Vancouver; the 10th-round clash between World Champion Boris Spassky (USSR) & Bob Zuk (Canada). In the second photo, Pal Benko (USA) looks on.

@UnityChess

Ivanchuk in 1991 when he won Linares ahead of Karpov and Kasparov.

@UnityChess