Tournament leader Alexander Morozevich lost his first game in Tashkent on Tuesday against Ruslan Ponomariov. It was the first win for the Ukrainian, who is now back on 50%. Gata Kamsky, who started with just 0.5/4, also won his first game. He beat Boris Gelfand, who now shares last place with the American. Rustam Kasimdzhanov beat Wang Hao to make the home crowd proud: the Uzbek now shares first place with four other players.

Cameras filming the start of round 5 | Photos by Anastasiya Karlovich & Giyanov Bakhtiyor, courtesy of FIDE

After the first rest day the FIDE Grand Prix resumed with the fifth round on Tuesday and it seemed some things had changed here and there. Winners became losers and vice versa. After five rounds, "plus one" is enough to be at the top of the leader board.

Playing his favorite French Defence, Alexander Morozevich lost his first game and with it his leader status. Ruslan Ponomariov chose Tarrasch's 3.Nd2 and kept a small edge from the opening because of a better pawn structure. It looked defendable for Black, until the Muscovite allowed a tactic that changed the character of the position. As it turned out, White's rook and two pawns were stronger than Black's minor pieces.

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Ponomariov takes down Morozevich in a Tarrasch French

Rustam Kasimdzhanov also scored his first full point – the local hero had started with four draws. As Wang Hao lost his way in a Scotch, "Kasim" moved to shared first place:

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Kasimdzhanov beats Wang Hao with Black in a Scotch

Gata Kamsky could finally smile as well. The American defeated Boris Gelfand in their first mutual encounter since the Israeli won their Candidates match in Kazan in 2011. Using the Leningrad Dutch, one of the weapons of the other U.S. top GM Hikaru Nakamura, Kamsky handled the middlegame position better than Gelfand and immediately struck when things became concrete. It was the second loss against the Dutch for Gelfand in a short time.

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With 1....f5 Kamsky beats Gelfand

In the game between Shakhriyar Mamedyarov and Fabiano Caruana a topical variation of the Meran Semi-Slav came on the board. A recent game Lupulescu-Inarkiev was followed, and the players quickly reached an ending with rooks and opposite-coloured bishops. Mamedyarov was a pawn up, but got a very passive rook so there were no serious winning chances.

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The clash between Mamedyarov and Caruana: a Meran, a draw

Peter Svidler chose the Archangelsk Variation of the Ruy Lopez in his game against Leinier Dominguez. The middlegame was about equal with one bad minor piece for both sides: Bb6 vs Ng3. Dominguez avoided a move repetition twice, but by doing so he allowed his opponent to become very active. It seems Black could win a healthy pawn at move 37.

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Dominguez and Svidler draw in a Ruy Lopez

Peter Leko drew his fifth game, with Black against Sergey Karjakin. The sideline of the Nimzo-Indian was also seen in the recent clash between Dutch GMs Sokolov and Van Wely. Karjakin got a tiny edge (which was more than Sokolov got out of the opening) but Leko had no trouble holding it.

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Karjakin couldn't break through Leko's defence in a Nimzo

FIDE Grand Prix Tashkent 2012 | Schedule & results

FIDE Grand Prix Tashkent 2012 | Round 5 standings