P.ConNerS stands for 'Parallel Controlled Conspiracy Number Search'. It has been written by Ulf Lorenz, who is a member of Prof. Dr. Burkhard Monien's research group at the University of Paderborn. U. Lorenz mainly works on the research fields of domain independent selective search in game trees, and on the field of efficient parallel algorithms for optimization problems. P.ConNerS uses a variant of the so called 'Controlled Conspiracy Number Search' algorithm. As a result it examines highly selective and irregular game trees. Evaluations are done by the help of depth 2 alphabeta searches. When it runs on a parallel machine with 60 Pentium 300 MHz processors, P.ConNerS reaches a rate of about 1.2 million nodes per second.
P.ConNerS
from the P.ConNerS site, after winning the 10th Grandmaster Tournament in Lippstadt, July 2000 [3]
P.ConNerS stands for 'Parallel Controlled Conspiracy Number Search'. Thus, the tournament victory is highly interesting from a research perspective, as well: P.ConNerS uses a non-conventional, non-alphabeta search algorithm. The search algorithm tries not only to maximize the search depth, but also tries to guarantee that even when one leaf-value changes, the result stays the same. A conspiracy 2 search may be interpreted as a special, global arrangement of a lot of so called singular extensions. As a result, it domain-independently searches highly selective and irregular game trees. The program is written in C.
P.ConNerS runs in parallel and gets its playing strength out of a workstation cluster, which consists of 160 Pentium II, 450 Mhz processors. Those are connected with a new European interconnection network, the so called SCI network. On that machine P.ConNerS examines between 3.5 and 5.0 Mnds/sec. On the 160 processors it achieves a speedup of about 50.
Table of Contents
P.ConNerS,
a parallel chess program by Ulf Lorenz. P.ConNerS used the unique approach of Parallel Controlled Conspiracy Number Search, developed by Ulf et al. [1] within the research group of Burkhard Monien from the University of Paderborn, Germany. Heiner Matthias was responsible for the book moves.
Descriptions
ICGA
from the ICGA-site [2]:P.ConNerS
from the P.ConNerS site, after winning the 10th Grandmaster Tournament in Lippstadt, July 2000 [3]P.ConNerS runs in parallel and gets its playing strength out of a workstation cluster, which consists of 160 Pentium II, 450 Mhz processors. Those are connected with a new European interconnection network, the so called SCI network. On that machine P.ConNerS examines between 3.5 and 5.0 Mnds/sec. On the 160 processors it achieves a speedup of about 50.
Achievements
Selected Games
10th Grandmaster Tournament, Lippstadt, P.ConNerS - Maia Chiburdanidze [5]See also
Publications
Forum Posts
External Links
References
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