33.Nd6??
A carelessness.
33. Qe2 h5 34. Ra1 Bb5 35. Qe1=
Now Khodashenas exploits it well.
33... c4 34. Ba2 Qb6+ 35.Kf1
(35. Kh1 Ng4 -+)
35... Rd8 36. Nxc4 Qc6 37. Qf4 Rc8 38. Rb1 Nd5 39. Qd4 Bxc4+ 40.Bxc4 Qxc4+ 0-1
if 41.Q×c4, then 41...Ne3+ 42.Ke2 Nxc4-+

🔸15th Avicenna Cup A 2018
🔸Round 2
⚪️Noroozi,Omid (2326)
⚫️Mosadeghpour,Masoud (2525)
🔸1-0

18. Rb7!!
Omid wards off the threat on his knight indirectly and creates the obvious threat of Rd7 and in some cases Rxa7.
18...Rd8
18... fxe5 19. Rxa7
A)19...Rb8 20. Rxa6 Qc7 21. dxe5 +-
B)19... Rxa7 20. Qe8#
19. Qa5 cxd4 20. cxd4 Kf8 21. Nb3 Rc8 22. Rd7 Qb6 23. Qa3 Nb4 24. Nd3
Ke8 25. Rxe7+ Kxe7 26. Nxb4 Kf7 27. f5 +-

⚫️#637 (Strategy-Black to Move)
🔸Chesney,B
🔸Gulko,B
🔸Somerset, USA, 1986

10...a5!
Now the bishop will make it to a6 and Black has an excellent game.
11.Nf4 Ba6 12.Re1 0-0-0 13.Be3 Nh6 14.Qh5 g6?! 15.Qd1! Nf5 16.Nce2! h5 17.c3 g5

⚪️#638 (Strategy-White to Move)
🔸Gulko,B
🔸Salov,V
🔸Reykjavik, 1991

17.Ne2!
The knight heads for h5, preparing to attack Black's kingside.
17...Qd6 18.Ng3 Ng6 19.Nh5 Bh8?! 20.Qe2!? Raf8 21.a3!? e5 22.dxe5?! fxe5 23.Ng5 Rxf1+ 24.Rxf1

⚫️#639 (Strategy-Black to Move)
🔸Rashkovsky,N
🔸Gulko,B
🔸Volgodonsk, 1981

Unity Chess Multiple Choice 639
public poll

B: d5 – 6
👍👍👍👍👍👍👍 46%
Gavin, Nikhil, @RichardPeng, مجید, Rachel, Zhenrui

C: a4 – 6
👍👍👍👍👍👍👍 46%
Jayden, @SteveWongso, Vincent, @AryanLeekha, George, Sanjana

A: e6 – 1
👍 8%
@Sophia_Peng

👥 13 people voted so far.

⚫️#640 (Strategy-Black to Move)
🔸Doroshkievich,V
🔸Gulko,B
🔸USSR Championship, Yerevan, 1975

Unity Chess Multiple Choice 640
public poll

B: a4 – 9
👍👍👍👍👍👍👍 82%
Gavin, Nikhil, Jayden, @SteveWongso, Vincent, @RichardPeng, @AryanLeekha, Zhenrui, Sanjana

C: h6 – 2
👍👍 18%
@Sophia_Peng, George

A: Nd5
▫️ 0%

👥 11 people voted so far.

A very exciting round in the #RussianChampionship Superfinals with 3 decisive games.

Daniil Dubov (2691), Vladimir Fedoseev (2707), and Grigoriy Oparin (2609) all have won their games to join Dmitry Andreikin (2710) in the lead.

#chessnews

🔹 71st ch-RUS 2018
🔹 PGN format

@UnityChess

🔹 68th ch-RUS w 2018
🔹 PGN format

@UnityChess

The three players decided to share the title of the 2018 #SinquefieldCup winner. Congratulations to Fabiano Caruana, Aronian and Carlsen !!

Final rd 9 at Sinquefield Cup: Magnus Carlsen (2836) beats Nakamura (2777) in 97 moves, and Aronian (2767) beats Grischuk (2766) after a rook sacrifice. The other games were drawn. Aronian, Caruana (2822), and Carlsen all tied for 1st. There is a playoff for first on Aug 28.

Final #GrandChessTour standings. Join us tomorrow at the same time for a tiebreak between Wesley So and Fabiano Caruana for the final qualifying spot to London!

🔹 6th Sinquefield Cup 2018 - Round 9
🔹 PGN format

@UnityChess