Dortmund Round Four

Round four at Dortmund brought more interesting chess and a new sole leader. 

Co-leader Mamedyarov drew with Kramnik, but Ponomariov came undone against Quang Liem (pictured) thanks to an inspired piece of tactics with 19. Nxg6! and 20. Bd6!!  For once opposite coloured bishops were not enough to salvage a draw.

That left Mamedyarov holding the sole lead with a score of 3/4.

Naiditsch pressed Leko hard but eventually a drawn rook ending resulted.

The standings after round four:

The official website (in German) can be found here.