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Ulf Lorenz,
a German computer scientist and games researcher, creator of the Parallel Controlled Conspiracy Number Search algorithm, which was also topic of his Ph.D. thesis [1], and author and co-author of various computer chess programs, notably P.ConNerS, and along with Chrilly Donninger, Hydra. Until 2007 Ulf was member of the research group of Burkhard Monien at the University of Paderborn, to continue at the Darmstadt University of Technology, where he researched on mathematical optimization and computational complexity theory, in particular quantified integer linear programming with connections to PSPACE-complete games, such as Othello, Gomoku, Amazons and others [2]. Actually, Ulf Lorenz is affiliated with the faculty of business administration, University of Siegen, and head of the department of technology management [3].
Ulf Lorenz


Ulf Lorenz, IPCCC 2000 [4]

Hydra team 2004: Ulf Lorenz, Erdogan Günes and Chrilly Donninger, IPCCC 2004 [5]

Dr. Ulf Lorenz am Brett [6], Adams vs Hydra [7]

Chess Programs

Ulf Lorenz is author and co-author of following chess programs:


Ulf was tournament organizer as well participant of the International Paderborn Computer Chess Championship IPCCC.

Selected Publications

[8] [9] [10]

1992 ...

1995 ...

2000 ...

2005 ...

2010 ...

2015 ...

External Links


  1. ^ Ulf Lorenz (2000). Controlled Conspiracy Number Search. University of Paderborn, Dissertation, advisor Burkhard Monien (German)
  2. ^ Thorsten Ederer, Ulf Lorenz, Thomas Opfer, Jan Wolf (2011). Modeling Games with the Help of Quantified Integer Linear Programs. Advances in Computer Games 13
  3. ^ Lehrstuhlteam | Betriebswirtschaftslehre (Prof. Dr. Ulf Lorenz)
  4. ^ Photo from the IPCCC 2000 Homepage
  5. ^ Die Internationalen Paderborner Computerschachmeisterschaften by Mathias Feist, ChessBase Nachrichten, February 17, 2004 (German)
  6. ^ Computerschach: Weltspitze mit der Universität Paderborn, Pressemitteilung (German) July 01, 2005
  7. ^ Adams vs Hydra: Man 0.5 – Machine 5.5 from ChessBase News, June 28, 2005
  8. ^ Publications of the AG-Monien: Ulf Lorenz
  9. ^ ICGA Reference Database (pdf)
  10. ^ dblp: Ulf Lorenz

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