Inarkiev into the lead!

The lowest-rated participant is now the sole leader on 4/6 after beating Gelfand with Black, whereas the previous leader Eljanov lost (with White!) to Alekseev.
It's surprising at this level that Black has a plus score after six rounds.
Grand Prix hopeful Teimour Radjabov (see the photo) has six draws, the only player on such a sequence.

The rest day seems to have reinvigorated the players who were involved in some hard-fought struggles with six out of the seven games going beyond move forty.

The sixth round featured four decisive results, of which three were with Black!

Gelfand was tricked by Inarkiev, the Russian having a strong resource at the end of a sharp line, as he gained two bishops for a rook. The ending was then hopeless for the World Cup champion.

Game No.	Name	Rating	Result	Name	Rating	Opening
1	Peter Svidler	2735	0.5-0.5	Peter Leko	2735	Spanish Berlin (C67)
2	Vassily Ivanchuk	2741	0.5-0.5	Teimour Radjabov	2740	English opening (A16)
3	Dmitry Jakovenko	2725	1-0	Ruslan Ponomariov	2733	Grünfeld Exchange (D85)
4	Boris Gelfand	2741	0-1	Ernesto Inarkiev	2669	Semi-Slav defence (D46)
5	Pavel Eljanov	2751	0-1	Evgeny Alekseev	2700	Queen's Indian defence (E17)
6	Vladimir Akopian	2694	0-1	Wang Yue	2752	Petroff's defence (C42)
7	Shakhriyar Mamedyarov	2763	0.5-0.5	Vugar Gashimov	2734	Chebanenko Slav (D15)

Alekseev had Black against the (former!) leader.

Maybe! @ official site

As a reminder here are the results from Friday's fifth round, which coincidentally was another good day for the holders of the black pieces!

Game No.	Name	Rating	Result	Name	Rating	Opening
1	Shakhriyar Mamedyarov	2763	0.5-0.5	Peter Svidler	2735	Grünfeld Russian System (D97)
2	Vugar Gashimov	2734	0.5-0.5	Vladimir Akopian	2694	Spanish Chigorin (C99)
3	Wang Yue	2752	0-1	Pavel Eljanov	2751	Slav defence (D12)
4	Evgeny Alekseev	2700	0.5-0.5	Boris Gelfand	2741	Italian game (C54)
5	Ernesto Inarkiev	2669	0.5-0.5	Dmitry Jakovenko	2725	Spanish Berlin (C67)
6	Ruslan Ponomariov	2733	0-1	Vassily Ivanchuk	2741	Semi-Slav (D46)
7	Teimour Radjabov	2740	0.5-0.5	Peter Leko	2735	Queen's Gambit Vienna

The general impression is that the players are making hard work of gaining any advantage as White!

...if he plays that, then I have this, and then... @ official site

The rankings after six rounds:

Ranking	Name	Country	Present Rating	Points
1st	Ernesto Inarkiev	Russia	2669	4
2nd-5th	Pavel Eljanov	Ukraine	2751	3.5
2nd-5th	Vugar Gashimov	Azerbaijan	2734	3.5
2nd-5th	Dmitry Jakovenko	Russia	2725	3.5
2nd-5th	Peter Leko	Hungary	2735	3.5
6th-9th	Evgeny Alekseev	Russia	2700	3
6th-9th	Boris Gelfand	Israel	2741	3
6th-9th	Teimour Radjabov	Azerbaijan	2740	3
6th-9th	Wang Yue	China	2752	3
10th-13th	Vassily Ivanchuk	Ukraine	2741	2.5
10th-13th	Shakhriyar Mamedyarov	Azerbaijan	2763	2.5
10th-13th	Ruslan Ponomariov	Ukraine	2733	2.5
10th-13th	Peter Svidler	Russia	2735	2.5
14th	Vladimir Akopian	Armenia	2694	2

Twelve of the fourteen players are within a win or a loss of 50%.

The two under-2700s are first and last.

For further information on this event, I suggest that you go to the official tournament site.