🔸Aeroflot Open Moscow 2018
🔸Round 4
⚪️Andreikin,Dmitry (2712)
⚫️Chigaev,Maksim (2560)
🔸1-0

📘 42...Q×b4??
Black should have tried the pawn-down rook ending by trading the queens with 42...Qd4+.
43.Qd8+ Ka7 44.R×c7 Qb6+ 45.Kg2 Q×c7 46.Ra3+ Kb6 47.Qd5! 1-0
With the idea of Qa5+-Rc3+

🔸Aeroflot Open Moscow 2018
🔸Round 4
⚪️Alekseenko,Kirill (2609)
⚫️Yuffa,Daniil (2521)
🔸1-0

📘 33...R×g2??
Black could have saved the game here with 33...e5.
(33...e5 34.Qe7 R×g2+ 35.K×g2 Qc2+ 36.Kh3 Qd3+ 37.Kh4 Q×e4+ 38.Kh3 Qe3+ 39.Kh4 Qe4+ = Perpetual check)
34.K×g2 Q×b2+ 35.Rf2 Ne3+ 36.Kh3 1-0

🔸Aeroflot Open Moscow 2018
🔸Round 5
⚪️Lysyj,Igor (2618)
⚫️Maghsoodloo,Parham (2594)
🔸1-0

📘 24...Nfe3?
A critical moment that Parham could have obtained a winning position by 24...Rd4.
(24...Rd4!
A)25.N×d4 Nc7 26.Qc3 N×d4 27.R×d4 Q×d4 28.Q×c7 Re8 -+
B)25.N×d8 R×d1 26.Q×d1 Nfe7 —->Q×d8 -+)
25.B×d5 N×d1 26.B×c4 N×b2 27.N×d8+ N×c4 28.Qe8+ Qf8 29.Qd7 +/-
🔸Parham Maghsoodloo, Iran Chess Champion in 2017
🔸Igor Lysyj, Russia Chess Champion in 2014

🔸Aeroflot Open Moscow 2018
🔸Round 5
⚪️Tabatabaei,M.amin (2577)
⚫️Aravindh,Chithambaram VR (2617)
🔸1-0

📘 18.f5!
A dynamic play by Tabatabaei caused his opponent to make a mistake.
18...e×f5? (18...Qb6) 19.N×f5 Rac8 20.Qf3 Bf8 21.N×h6! g×h6 22.Q×f6 Bg7 23.B×f7+ Kh8 24.Ng6+ Kh7 25.Nf8+ Kh8 26.Qg6 1-0

⚪️#301 (Strategy-White to Move)
🔸Karpov,Anatoly (2735)
🔸Polgar,Judit (2670)
🔸Budapeste 1998

📕 44.Rf3!
The correct idea. White intends to attack black f7-pawn with 45.Rc7 or 45.Rf4.

⚫️#302 (Strategy-Black to Move)
🔸Huebner,Robert (2600)
🔸Karpov,Anatoly (2690)
🔸Tilburg 1977

📕 22...Bh6!
It's all about the c-file. Again in judging positions of material balance involving rooks, open files with entry squares are key.

⚪️#303 (Strategy-White to Move)
🔸Polugaevsky,Lev (2595)
🔸Torre,Eugenio (2560)
🔸Biel, 1989

📕Unity Chess Multiple Choice 303

C: Bd1 – 4
👍👍👍👍👍👍👍 44%

B: d5 – 3
👍👍👍👍👍 33%

A: Qc2 – 2
👍👍👍👍 22%

👥 9 people voted so far.

⚪️#304 (Strategy-White to Move)
🔸Kramnik,Vladimir (2770)
🔸Kasparov,Garry (2849)
🔸World Chess Championship London 2000

📕Unity Chess Multiple Choice 304

C: Nb1 – 4
👍👍👍👍👍👍👍 40%

A: Rc1 – 3
👍👍👍👍👍 30%

B: g4 – 3
👍👍👍👍👍 30%

👥 10 people voted so far.

USSR v. Yugoslavia match, Tbilisi, Nov 1973. Among the more famous participants: Nona Gaprindashvili (centre right) and (to her left) Tigran Petrosian. On Petrosian's left is Gligorić.

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Grandmaster Fridrik Olafsson (Iceland) v. Ulf Andersson (Sweden), from the 11th round at Wijk aan Zee, January 1971. White eventually won this game in 104 moves.

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