Grischuk, Alexander – Mamedyarov, Shakhriyar

An early c5 is the signature of Tarrasch/Semi Tarrasch defence

Grischuk, Alexander (2742)
Mamedyarov, Shakhriyar (2766)
Result: 1-0

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Date: February 26, 2017
Location: Sharjah UAE
Tournament: Sharjah Grand Prix 2017
Round: 8.2
Opening: B14 Caro-Kann, Panov–Botvinnik Attack, 5...e6
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Published on: June 11, 2023

[Event "Sharjah Grand Prix 2017"]
[Site "Sharjah UAE"]
[Date "2017.02.26"]
[Round "8.2"]
[White "Grischuk, Alexander"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1-0"]
[ECO "B14"]
[WhiteElo "2742"]
[BlackElo "2766"]
[PlyCount "121"]
[EventDate "2017.02.18"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 {An early c5 is the signature of Tarrasch/Semi Tarrasch defence} 5. e3 (5. cxd5 exd5 6. Bg5 {Transposes to the Tarrasch main line}) 5... Nc6 (5... cxd4 {Going for the isolani position with Black at all costs isn't favourable} 6. exd4 dxc4 7. Bxc4 Nc6 8. O-O {And since White developed a bishop with tempo, he has a favourable version of the isolani position as he is ready for a fast d5}) 6. cxd5 (6. a3 {Was once a mainline}) 6... Nxd5 (6... exd5 {Is the alternative}) 7. Bd3 cxd4 8. exd4 Bb4 ( 8... Be7 {Leads to a normal position}) 9. O-O $1 {[pgndiagram] A nice pawn sacrifice. Suddenly it turns out White is much better out of the opening} O-O { Mamedyarov decides to play it safe} (9... Nxc3 10. bxc3 Bxc3 11. Rb1 {And White has a large initiative} Bb4 12. Be4 Be7 13. Qc2) (9... Bxc3 10. bxc3 Nxc3 11. Qb3 Nd5 12. Ba3 {And Black can't castle. White has the initiative}) 10. Bc2 {[pgndiagram] It is clear that White has a rather pleasant position. Black's escapade with the bishop on b4 has cost him precious time} Bd7 (10... Be7 11. Qd3 g6 12. a3 Bd7 13. Bh6 Re8 {Is very pleasant for White, but still, Black doesn't have a clear weakness}) 11. a3 $6 (11. Qd3 g6 12. Bb3 {Was right. Winning over the d5 square} Nce7 13. Ne5 {With the initative}) 11... Bxc3 $2 { But this move should be deemed a clear mistake. Mamedyarov was obviously discontent with his position, but here he goes from frying pan to fire.} (11... Be7 12. Qd3 g6 {Returns us to something similar to already examined lines}) 12. Qd3 {[pgndiagram]} (12. bxc3 {Not yet determining the queen position, was also interesting} b5 13. a4 a6 14. Re1 {But White stands nicely everywhere}) 12... f5 13. bxc3 b5 14. a4 a6 15. Re1 Qc7 16. Ng5 $1 {A good move, that introduces some tactical threats of Bb3-Nxe6-Rxe6-Bxd5} (16. Bd2 {Simply defending the pawn, was also possible} Rac8 17. axb5 axb5 {One sample line continues} 18. Bb3 Na5 19. Bxd5 exd5 20. Bf4 Qxf4 21. Rxa5 {And the knight is much stronger than the bishop}) 16... Qd6 {Black has to defend with the queen} (16... Rae8 {Would have allowed White to continue chasing his main idea} 17. axb5 axb5 18. Bb3 h6 19. Nxe6) 17. Qd2 $6 {The first moment in which Grischuk starts losing the thread.} (17. Bb3 {Was the best} h6 18. Nf3 Rfb8 19. Bxd5 exd5 20. g3 {With solid positional advantage}) (17. Ba3 {Doesn't work} b4) 17... h6 $6 {

Grischuk, Alexander – Mamedyarov, Shakhriyar

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