⚪️#171 (Endgame-White to Move)
🔸Atalik,E (2445)
🔸Cori T.,D (2406)
🔸WCh Women 2018

Unity Chess Endgame Multiple Choice 171
public poll

A) Bh3 – 12
👍👍👍👍👍👍👍 63%
عباس, Nikhil, Hossein, @MerissaWongso, Abedini, Sahil, Atharva, @MatinMagnoos, Hansika, Ali, Abhi, Kasyap

C) Bb2 – 6
👍👍👍👍 32%
Reza, reza, @Zamani9899, Max, @BehroudR, @steve12345678910

B) g4 – 1
👍 5%
@A_Wild_Richard

👥 19 people voted so far.

🔸Tata Steel India Rapid 2018
🔸Round 7
⚪️Karjakin,Sergey (2753)
⚫️Harikrishna,P (2729)
🔸1-0

16.Nxb6!
A timely exchange in order to get the f2–pawn out the pin and exploit the awkward position of the opponent's bishop.

[16.Bb3!? △N×b6 16...Kg7 17.Nxb6 axb6 18.f3 Nxg3 19.hxg3! Bh5 20.exf5± △g4]

16...axb6 17.f3 Nxg3™ 18.hxg3?!
18.Qxg3! would be better: 18...Bh5 19.Qh3! △Q×h6 19...Qe8 20.exf5±

18...Bh5 19.exf5 Bf7 20.g4 Kg7?±
Harikrishna misses the opportunity to take back his pawn.

[20...Rxa2! 21.Rxa2 Bxa2 22.b3 Bb1²]

⚪️#171 (Strategy-White to Move)
🔸Khotenashvili,B (2477)
🔸Vo Thi Kim Phung (2354)
🔸WCh Women 2018

18.Nc5 [18.Bg3! Exchanging the important opponent's dark-squared bishop makes White's task easier to attack the weak c6–pawn and exploits c5–outpost. 18...Nxa4 19.Qxa4 Be6 20.Rc1 Bd5 21.Rc5 Re6 22.Nc4 Bxg3 23.fxg3 a5 24.Rxa5 Rxa5 25.Qxa5 Qxa5 26.Nxa5 Rf6 27.Rc1 Kf8 28.Nb7!²; 18.Rc1 Bf8! 19.Nc5 a5 20.Ncxe4 Qa7 21.Bg3 (21.Qxc6? Bb7 22.Qc2 b3 23.axb3 (23.Qd3 a4 24.Nc5 a3–+ 25.bxa3 Bxc5 26.Rxc5 Na4 27.Rcc1 Ba6–+) 23...a4!µ) 21...Ba6 22.Nc5 Bb5=]

18...Bf5 19.Bg3+/=

½–½

⚪️#171 (Endgame-White to Move)
🔸Atalik,E (2445)
🔸Cori T.,D (2406)
🔸WCh Women 2018

29.Bb2! [29.g4 Be6 30.g5 Nc1 31.Bb2 Nd3 32.Ba3 Nxf2 33.Bxe7+ Kg8 34.Kg3 Ng4 35.Ra8 Rxa8 36.Bxa8 f6=; 29.Bh3 Rd8 30.Bb2 Nd4 31.Ba3 Re8 32.Bd7 Nb5 33.Bxb5 Bxb5 34.g4 f5 35.Kg3 fxg4 36.Kxg4 h6 37.Kf4 Kf7 38.Ke5 Bc6 39.Bb4=]

29...Be6 30.Ra8 f6?! [30...Rxa8! 31.Bxa8 f6 32.f4 Bc4 33.Bf3 Kf7 34.Kg2 e5 35.fxe5 fxe5 36.Bxe5 Nc1=]

31.Rxc8+ Bxc8 32.Bf1 Ba6 33.Kg2 e5 [33...Kf7 34.f3 h5 35.Kf2 Nxg3 36.Bxa6 Nf5 37.f4 Nxh4 38.Bc4+²]

34.f3 Bb5 35.Kf2 Nd4? [35...Nxg3 36.Bxb5 Nh5 37.Bc1±]

36.Bxd4 Bxf1 37.Bc5+

1–0

⚪️#172 (Strategy-White to Move)
🔸Socko,M (2463)
🔸Shvayger,Y (2389)
🔸WCh Women 2018

Unity Chess Strategy Multiple Choice 172
public poll

B) Rc1 – 9
👍👍👍👍👍👍👍 56%
@mahyarebrahimi1983, reza, Nikhil, @A_Wild_Richard, Atharva, Michael, Hansika, Abhi, Kasyap

C) Nc5 – 4
👍👍👍 25%
@BUSYAMIR, @MerissaWongso, Farshid, @Sophia_On_The_Loose

A) Bg3 – 3
👍👍 19%
Reza, عباس, @steve12345678910

👥 16 people voted so far.

⚪️#172 (Endgame-White to Move)
🔸Bodnaruk,A (2426)
🔸Vega Gutierrez,S (2389)
🔸WCh Women 2018

Unity Chess Endgame Multiple Choice 172
public poll

A) Bd6 – 10
👍👍👍👍👍👍👍 59%
Reza, @mahyarebrahimi1983, Nikhil, @raienr, @BUSYAMIR, @Sophia_On_The_Loose, @A_Wild_Richard, Atharva, Michael, @ZhenruiGu

C) Kd2 – 4
👍👍👍 24%
reza, Hansika, Pravin, Kasyap

B) Be5 – 3
👍👍 18%
@steve12345678910, @MerissaWongso, Srikar

👥 17 people voted so far.

🔸Tata Steel India Rapid 2018
🔸Round 9
⚪️So,W (2765)
⚫️Nihal,Sarin (2576)
🔸1-0

15.exd3! [So opens the lines against the opponent's king which is stuck in the center.]

15...exd3? [¹15...Qxd3 16.Qxd3 exd3 17.Rfe1+ Be7 18.Nc5! △N×b7 18...Nd4 19.Bxb7 Rd8 20.Rad1 Nd7!±]

16.Re1+ Be7 17.Nc5! [△N×b7]

17...0–0 18.Nxb7 Qd7 19.Bxc6 Qxc6 20.Rxe7+–

1–0

⚪️#172 (Strategy-White to Move)
🔸Socko,M (2463)
🔸Shvayger,Y (2389)
🔸WCh Women 2018

18.Nc5 [18.Bg3! Exchanging the important opponent's dark-squared bishop makes White's task easier to attack the weak c6–pawn and exploits c5–outpost. 18...Nxa4 19.Qxa4 Be6 20.Rc1 Bd5 21.Rc5 Re6 22.Nc4 Bxg3 23.fxg3 a5 24.Rxa5 Rxa5 25.Qxa5 Qxa5 26.Nxa5 Rf6 27.Rc1 Kf8 28.Nb7!²; 18.Rc1 Bf8! 19.Nc5 a5 20.Ncxe4 Qa7 21.Bg3 (21.Qxc6? Bb7 22.Qc2 b3 23.axb3 (23.Qd3 a4 24.Nc5 a3–+ 25.bxa3 Bxc5 26.Rxc5 Na4 27.Rcc1 Ba6–+) 23...a4!-/+) 21...Ba6 22.Nc5 Bb5=]

18...Bf5 19.Bg3+/=

½–½

⚪️#172 (Endgame-White to Move)
🔸Bodnaruk,A (2426)
🔸Vega Gutierrez,S (2389)
🔸WCh Women 2018

49.Bd6?! [49.Be5 Rxe6 (49...Rg6 50.Bd6 Nc8 51.e7+–; 49...Rxf5 50.gxf5 Nxf5 51.Kf3+–) 50.Bb8+ Kxb8 51.Rxe6 Nxf5 52.gxf5 Kc7 53.Kf3 Rh4 54.Re4 Kd6 55.Kg3 Rh1 56.Kg4 Rg1+ 57.Kh5 g4 58.Rxg4 Rf1 59.Kg6 Ke7 60.Rg3 Rf2 61.Re3+ Kf8 62.Rh3 Ke7 63.Rh7+ Kd6 64.Rb7 Ke5 65.Re7+ Kd4 (65...Kd6 66.Re3+–) 66.f6 Kxd3 67.Rb7+–; 49.Kd2 Rxf5 50.gxf5 Nxf5 51.Re5 Ng7 52.e7 Ne8 53.Ke3 Kb7 54.Re6 Rf7 55.Ke4+/=]

49...Nc8?? [49...Rxf5 50.gxf5 (50.Bxe7 Rh2+ 51.Ke1 Rh1+ 52.Ke2 Rh2+ 53.Ke1 (53.Ke3 Rh3+=) ) 50...Nxf5+/=]

50.e7 Nxd6 51.Nxd6 Rh2+ 52.Ke3 [52.Ke1! Rh1+ 53.Kd2 Rh2+ 54.Re2! Rxe2+ 55.Kxe2 Re6+ 56.Kd2 Rxe7 57.Nc8+ Kb7 58.Nxe7+–]

52...Rh3+ 53.Ke2 Rh2+ 54.Ke3 Rff2 55.e8Q Re2+ 56.Kf3 Rhf2+ 57.Kg3 Rg2+ 58.Kf3 Rgf2+ 59.Kg3 Rg2+

½–½