17...Qd7!
Black vacates the d6-square for the knight and tries to defend against the threat of Qa4. 17...Qd7 prepares ...Nb7-d6. The game continuation avoids 17...Rae8? 18 Bd2 and White is better because he can exchange on a5, destroying Black's queenside, and if 18...Nb7 then 19 Qa4 is winning.
18.Ng3 Rae8! 19.Bd2 Nb7 20.Ne4 Nd6 21.Nxd6 Qxd6 22.Qa4?!
Boris: My opponent evaluated the position too optimistically and decided to take the a7 pawn. However, the queen on a7 will be excluded from the game, allowing Black a strong and sudden kingside counterattack.
22...Bc8 23.Qxa7 Be5! 24.h3?! Bd4!
After provoking the weakness on h3, Black is ready to sacrifice on h3 and give check on g3. In order to accomplish this, I need to pin the f2-pawn.

⚪️#626 (Strategy-White to Move)
🔸Gulko,B
🔸Smyslov,V
🔸USSR Championship, Leningrad, 1977

14.Qa4!
By threatening to increase the pressure with 15 Qb5, White forces Black to take on d5.
14...Nxd5 15.cxd5 Nb8 16.Qc2!
Boris: Now that I have forced Black to play his knight back to b8, I hope to take advantage of its poor placement.
16...c6 17.Nc3 Rc8 18.dxc6! Nxc6 19.Qa4! Rab8! 20.Qb5 Be6 21.Nd5 Qf7 22.Rbc1+/=

⚪️#627 (Strategy-White to Move)
🔸Fischer,R
🔸Petrosian,T
🔸Buenos Aires, 1971

Unity Chess Multiple Choice 627
public poll

C: N×d7 – 6
👍👍👍👍👍👍👍 55%
Gavin, Evan, @Sophia_Peng, @Amflower, Zhenrui, Sanjana

B: Bc2 – 3
👍👍👍👍 27%
Vincent, @RichardPeng, Rachel

A: g4 – 2
👍👍 18%
@Ismailaqa, @YaminiG

👥 11 people voted so far.

⚪️#628 (Strategy-White to Move)
🔸Gulko,B
🔸Adams,M
🔸Groningen, 1990

Unity Chess Multiple Choice 628
public poll

B: f4 – 7
👍👍👍👍👍👍👍 64%
Gavin, Evan, @Sophia_Peng, Yiyi, @AryanLeekha, Zhenrui, Sanjana

C: Qd2 – 3
👍👍👍 27%
Vincent, @YaminiG, Rachel

A: a3 – 1
👍 9%
@RichardPeng

👥 11 people voted so far.

Grischuk Beats Nakamura To Make 4-Way Tie Atop Sinquefield Cup.

https://bit.ly/2MGV03y

Rd 3 at the Sinquefield Cup: Grischuk beat Nakamura after 89 moves and 6.5 hours of play (Bishop and 4 pawns vs. Bishop and 2 pawns endgame, same colored bishops) The other games, Aronian-Carlsen, Mamedyarov-Caruana, Vachier_Lagrave-So, and Karjakin-Anand, all drew.

🔹 6th Sinquefield Cup 2018 - Round 3
🔹 PGN format

@UnityChess

❇️ UNITY CHESS CLUB TELEGRAM CHANNEL
https://t.me/unitychess

♻️ Share with your freinds !!
@unitychess

✴️ #Tarrasch_chess_quotes_003

🔸 Siegbert Tarrasch
🔸 German Chess Master

@unitychess

✴️ #about_Tarrasch

🔸 Siegbert Tarrasch
🔸 Grman Chess master

🔰 Siegbert Tarrasch was one of the strongest chess players and most influential chess teachers of the late 19th and early 20th century. Tarrasch was born in Breslau, Prussian Silesia.

🔘 Full name: Siegbert Tarrasch
🔘 Country: Germany
🔘 Born: 5 March 1862
Breslau, Province of Silesia, Kingdom of Prussia
(now Wrocław, Poland)
🔘 Died: 17 February 1934 (aged 71)
Munich, Germany

🔰 Siegbert Tarrasch, German chess master and physician who was noted for his books on chess theories.

Tarrasch won five major tournaments consecutively between 1888 and 1894. His best achievement was probably in 1898 at Vienna, where he tied for first with the American Harry Nelson Pillsbury, whom he defeated in a play-off match. After 1907 he participated in more than 20 international matches but never placed in the top three positions. Especially disappointing to him was his loss to Emanuel Lasker in 1908 for the world championship. Despite his failures, Tarrasch is best remembered for his books, especially The Game of Chess (1935), which developed and popularized Wilhelm Steinitz’s theories while differing with the master about what constituted a small advantage.

♦️ A memorable game by Tarrasch!👇
▪️ Rudolf Spielmann vs Siegbert Tarrasch
▪️ Maehrisch-Ostrau (1923), Ostrava CSR, rd 11, Jul-14
▪️ King's Gambit: Falkbeer Countergambit. Charousek Gambit Main Line (C32)

♦️ Review and download PGN file👇
@unitychess

🔸Rudolf Spielmann - Siegbert Tarrasch, Ostrava 1923
🔸PGN format

@unitychess

For someone to win, another must lose... Grischuk joins the #SinquefieldCup leaders!

https://bit.ly/2PqQtks