Ivanchuk - Morozevich was last to end in round 4 of Reggio Emilia tournament. This time all games turned out to be decisive.
Spanish Game (which became topical due to Magnus Carlsen) with a seemingly modest 6.d3 took place in this encounter.
Ivanchuk, quite an uncomfortable rival for Morozevich, managed to gradually gain an advantage. Despite the fact that both of the players were making mistakes in a mutual time trouble (for example, before Alexandr's 35th move the position stayed unclear), Ukrainian grabbed victory.
At the end Black allowed White to be checkmated.
51.Rc7+ Kxf6 52.Bg7#
Now Ivanchuk shares first place with Nakamura - 8 points each. The last round of the first circle will be played in the last day of 2011. Start at 18:00 MSK Time.