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🔸2nd Paytakht Cup 2017 Tehran
🔸Round 3
⚪️Darini,Pouria (2481)
⚫️Tabatabaei,M amin (2566)
🔸0-1
📘10.Nd3 is a fasionable move in top level. From d3 the knight controls the key c5 and f4 squares and overprotects e5. Darini had played this position with another move order of black against Zaur Mammadov and continued with f4 and Bh5.
The alternative is 10.Bh5 that Anand played it against Giri in 2015. After Bh5 the pressure over f7 prevents black from castling on the queenside in the next few moves.
🔸2nd Paytakht Cup 2017 Tehran
🔸Round 3
⚪️Darini,Pouria (2481)
⚫️Tabatabaei,M amin (2566)
🔸0-1
📘31.Qe2 e5 32.Nf3 Bd3 33.Qd2 f4=
Black has an active position.
The right move is the prophylactic
31.Qd1!+/-, which prevents black from playing e5:
31...e5? 31.N×f5! R×f5 32.Q×d5 B×d5 33.R×f5 +-
🔸2nd Paytakht Cup 2017 Tehran
🔸Round 3
⚪️Sibashvili,Giorgi (2412)
⚫️Shamsi,Mohammadhossein (2189)
🔸1-0
📘23.Rf7? K×f7 24.R×d7 Ke6 25.R×d4 R×g2 +/-
The Georgian International master missed a forced win.
23.Re8+! Kd6 24.Rd1!+- threatening both Rxd4 and Bxe5.
🔸2nd Paytakht Cup 2017 Tehran
🔸Round 3
⚪️Fendereski,Nima (2294)
⚫️Pira,Davoud (2332)
🔸½-½
📘After the game move 30...Qa1+ black has the upper hand. A stronger move would be 30...e4 and now.
30...e4
A) 31.Rg3 e3-+
B) 31.Nxe4 Qb1+ 32.Ke2 Qxc2-+
C) 31.Rxd5 Ne3+ 32.Kd2 Nxd5 33.Nxd5 Qd4-+
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🔸2nd Paytakht Cup 2017 Tehran
🔸Round 3
⚪️Ghaem Maghami,Ehsan (2564)
⚫️Mousavi,Seyed Khalil (2456)
🔸1-0
🔸2nd Paytakht Cup 2017 Tehran
🔸Round 4
⚪️Tabatabaei,M amin (2566)
⚫️Demchenko,Anton (2649)
🔸1-0
📘 9.h4
Is an aggrassive move to start an attack on black's king by the pawn sacrifice h5.
Prophylactic alternatives are 9.Nc1 and 9.Rc1 to halt b5.
🔸2nd Paytakht Cup 2017 Tehran
🔸Round 4
⚪️Tabatabaei,M amin (2566)
⚫️Demchenko,Anton (2649)
🔸1-0
📘 39...Nc8? seems inactive.
40.Be6! Re8 41.Bf5+ Kh8 42.Rh5! +-

Better was 39...Nb5+ that controls key squares d4, c3 and c7.
40.Kd3 Qe7! black is trying to create counterplay.
41.Be6 Rf8 if 42.Rh5? Qc7-+ and Qc3
🔸2nd Paytakht Cup 2017 Tehran
🔸Round 4
⚪️Tabatabaei,M amin (2566)
⚫️Demchenko,Anton (2649)
🔸1-0
📘 White to move and mate in 4!
50.Rg8+ K×h7 51.R1g7+ Kh6 52.Bg5+ Kh5 53.Rh8#
🔸2nd Paytakht Cup 2017 Tehran
🔸Round 4
⚪️Kantans,Toms (2524)
⚫️Firouzja,Alireza (2525)
🔸1-0
📘 9.0-0-0!?
An interesting novelty by the Latvian grandmaster. Accepting the sacrifice against a full-prepared opponent without prior preparation seems extemely dangerous. For instance,
9...exd4 10.Nd5 Qd8? 11.e5! +-
10...Qa5 seems a better choice and white has some compensation for his positional sacrifice. Firouzja made a wise practical decision and did not accept the piece.
9...h6 10.fxe5 dxe5 11.Bxf6 Nxf6 12.Nf5
And with transposition of move orders we have arrived at Yu Yangi- Le Quang Liem 2011.
🔸2nd Paytakht Cup 2017 Tehran
🔸Round 4
⚪️Mousavi,Seyed Khalil
⚫️Asgharzadeh,M reza (2264)
🔸1-0
📘 Black is threatening to take back the strong pawn on d6 by playing 10...e5
10.Nd4!+/- is the only move that prevents black from playing e5.
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🔸2nd Paytakht Cup 2017 Tehran
🔸Round 4
⚪️Tahbaz,Arash (2398)
⚫️Mosadeghpour,Masoud (2513)
🔸1-0