| Liviu-Dieter Nisipeanu | |
| Country: | Romania (until 2014; since 2023) Germany (2014–2023) |
| Birth Date: | 1 August 1976 |
| Birth Place: | Braşov, Romania |
| Grandmaster (1997) | |
| Peakrating: | 2707 (October 2005) |
| Peakranking: | No. 15 (October 2005) |
| Fideid: | 1202758 |
Liviu-Dieter Nisipeanu (born 1 August 1976) is a Romanian chess grandmaster. His peak FIDE rating was 2707 in October 2005, when he was ranked fifteenth in the world, and the highest rated Romanian player ever. His highly aggressive style of play has earned him a reputation of a modern-day Mikhail Tal.[1]
In 1999, Nisipeanu as a clear outsider made it to the semifinals of the FIDE World Chess Championship by beating Vasily Ivanchuk in round 4 and Alexei Shirov in the quarterfinals only to succumb to the eventual champion Alexander Khalifman.[2]
Nisipeanu won the European Individual Chess Championship 2005 in Warsaw with 10 points out of 13 games, half a point ahead of runner-up Teimour Radjabov from Azerbaijan.[3]
In April 2006, Nisipeanu played FIDE World Champion Veselin Topalov in a four-game match. Topalov won by a score of 3:1. The match was not for any official title.[4]
In April 2014, Nisipeanu started playing under the German flag.[5] In 2017 he won the German Chess Championship in Apolda for the first time.
In 2022, Nisipeanu won the Targu Mures Open, with a score of 7/9[6]
In April 2023, Nisipeanu returned to playing under the Romanian flag.[7]