21...f6! [A multi-purpose move: 1. closing the a1–h8 diagonal. 2. preparing to develop the dark-squared bishop. 3. A prophylactic move to reply White's f5 move with ...e5.]

[21...a5? 22.f5! a4 23.fxe6 Bxe6 24.Rhf1² Rde1]

22.Bb4 Bd6 [22...Bxb4+!? 23.Qxb4 Kf7 24.Ra1 Bd7-/+ Rhb8]

23.Bxd6 Qxd6 24.b4 0–0!-/+

⚪️#193 (Strategy-White to Move)
🔸Shuvalova,Polina (2441)
🔸Demidov,M (2520)
🔸ch-RUS Rapid GP Final

16.Ng3! [Since Black suffers from lack of space and his rooks are not connected yet, White decides to exchange a pair of rooks in order to take control on the only open file.]

[16.Re2 Bf5 17.Rae1 Bg6 18.Ng3 Rxe2 19.Nxe2 Bxd3 20.Qxd3 b5!?=; 16.Rab1!? Bd7 17.Ng3 b5+/=]

16...Rxe1+ 17.Rxe1 Be6 18.Nh2?! [18.Qd1! Nf6 19.Bb1 Qd7 20.Qc2+/=]

0–1

⚫️#193 (Endgame-Black to Move)
🔸Maltsevskaya,Aleksandra (2243)
🔸Bocharov,D (2533)
🔸ch-RUS Rapid GP Final 2018

22...f5! [22...Rc4 23.Qe2 f5 24.f3 Rf4 25.Rde1 fxg4 26.fxg4 Qf7 27.Rxf4 gxf4 28.Qe4 g5 29.Rf1 Rc8 30.Qd3 Kg7 31.a3 Rh8 32.Rh1 Qe7 33.Qe4 Qf6 34.Qd3 Re8–+; 22...Qd8 23.Rd3 Rc4 24.Qe2 Rf4 25.Rg3 Qd7 26.b3 f5 27.gxf5 Qxf5 28.f3 Rf6=/+]

23.gxf5 Rxf5 24.Rd3 Rc4 25.Qe2 Qf7 26.b3 Rcf4 27.Qd2 g4! 28.h4 Rf3 29.Qe2 R5f4 30.c4 e4 31.Re3 g3

0–1

⚪️#194 (Strategy-White to Move)
🔸Demidov,M (2520)
🔸Maletina,Tatiana (2270)
🔸ch-RUS Rapid GP Final

Unity Chess Strategy Multiple Choice 194
public poll

A) Bf4 – 10
👍👍👍👍👍👍👍 91%
Nikhil, @BehroudR, Alexander, @Sophia_Giraffe, @A_Wild_Richard, Srikar, Atharva, Javier, Hansika, Pravin

C) Nb5 – 1
👍 9%
Vincent

B) Rd1
▫️ 0%

👥 11 people voted so far.

⚪️#194 (Endgame-White to Move)
🔸Ponkratov,P (2630)
🔸Kokarev,Dm (2598)
🔸ch-RUS Rapid GP Final 2018

Unity Chess Endgame Multiple Choice 194
public poll

A) Rg7+ – 16
👍👍👍👍👍👍👍 94%
@Rasoulsamimi1361, Nikhil, @BehroudR, Vincent, @Sujas2, Alexander, @Sophia_Giraffe, @A_Wild_Richard, @R5chess, @AryanLeekha, Atharva, K, Javier, Mohammad, Hansika, Pravin

B) Ra7 – 1
▫️ 6%
Srikar

C) Rd7
▫️ 0%

👥 17 people voted so far.

🔸Bundesliga 2018–19
🔸Round 2
⚪️Prusikin,M (2510)
⚫️Fedoseev,Vl3 (2714)
🔸0-1

19...Bf6! [All Black's pieces are working together to dominate the board.]

20.Nh5 [20.Bb2 Bg5! 21.f4 Ne3 22.fxg5 Bxg2+ 23.Kg1 Bxf1 24.Nxf1 Nc4 25.Qc1 Nxb2 26.Qxb2 Qxg5+ 27.Kh1 Qd5+ 28.Kg1 Ne4–+]

20...Ne3 21.Nxf6+™ Qxf6 22.Qxe3™ [The only way to put up more resistance.]

[22.Bb2? Nxf1 23.Rxf1 Be4!–+ B×c2]

22...Rxe3 23.Bxe3 g6-/+

⚪️#194 (Strategy-White to Move)
🔸Demidov,M (2520)
🔸Maletina,Tatiana (2270)
🔸ch-RUS Rapid GP Final

13.Nb5! [Seizing the initiative.]

[13.Rd1!? Bb4 14.Nb5 0–0 15.a3 Ne5 16.Kg2 Nxf3 17.Kxf3²; 13.Bf4!? Be7 14.a3 0–0 15.Rac1+/=]

13...Rc8 14.Bf4 e5 15.Bd2 e4 16.Bg2±

⚪️#194 (Endgame-White to Move)
🔸Ponkratov,P (2630)
🔸Kokarev,Dm (2598)
🔸ch-RUS Rapid GP Final 2018

42.Rg7+! [42.Ra7 Nf5 43.Bd2 Rc2 44.Bb4 Rc6=; 42.Rd7 Nf7 43.Be3 Rc2 44.Rd2 Rc4 45.Rd4 Ne5 46.f4 Rxd4 47.Bxd4 Nd7 48.g4 Kf7 49.f5 gxf5 50.gxf5 Ke7 51.Kg2 Kd6 52.Kf3 Kd5 53.Ke3 Kc4 54.Ke4 Nc5+ 55.Ke3 Nd7=]

42...Kh8 43.Rd7 Kg8 44.Rg7+ Kh8 45.Ra7 Kg8 46.g4! g5 47.Kg2 Rc8 48.Rxa6?! [48.Rg7+! Kh8 49.Rd7 Ne4 50.Re7 f5 (50...Nd6 51.Bg7+ Kg8 52.Bxf6+–) 51.f3 Nc3 52.gxf5 Nd5 53.Re5 Nf6 54.Re6 Nh5 55.Rxa6+–]

48...Nf7 49.Rxf6 Ra8 50.Rb6 Nxh6 51.Rxh6 Kg7 52.Rh5 Kg6 53.h4 h6 54.hxg5 hxg5

½–½

⚪️#195 (Strategy-White to Move)
🔸Bocharov,D (2533)
🔸Sjugirov,S (2663)
🔸ch-RUS Rapid GP Final

Unity Chess Strategy Multiple Choice 195
public poll

C) Nb5 – 8
👍👍👍👍👍👍👍 100%
Nikhil, Alexander, @Sophia_Giraffe, @A_Wild_Richard, Srikar, @AryanLeekha, Hansika, Kasyap

A) Rac1
▫️ 0%

B) R×d8
▫️ 0%

👥 8 people voted so far.