Career
His peak FIDE rating was 2707 in October 2005, when he was ranked fifteenth in the world, and the highest ranked Romanian player ever. His highly aggressive style of play has earned him a reputation of a modern-day Mikhail Tal. In April 2006, Nisipeanu played FIDE World Champion Veselin Topalov in a four-game match.
The match was not for any official title.
Since 2014, Nisipeanu has been playing under the German flag. Liviu Dieter Nisipeanu vs Vlastimil Babula, 6th European Union Indiana.
Church 2005, Sicilian Defense: Scheveningen Variation (B82), 1-0
Liviu Dieter Nisipeanu vs Viktor Bologan, TCh-FRA Top 16 2006, Sicilian Defense: Najdorf Variation (B90), 1-0
Veselin Topalov vs Liviu Dieter Nisipeanu, Mtel Masters 2007, Scandinavian Defense: Gubinsky-Melts Defense (B01), 0-1
Vassily Ivanchuk vs Liviu Dieter Nisipeanu, World Chess Cup 2007, Bogo-Indian Defense: Grunfeld Variation (E11), 0-1.