Home * Engines * Nexus
kleinbottle_full.jpg

Nexus,
a strong private chess engine by Ralf Dörr and Norbert Esser with an own GUI [1]. Written in Pascal and compiled with Delphi [2], Nexus has lot of knowledge implemented, notably in the endgame concerning the rule of the square, passed pawn races and corresponding squares, and performs bitboard techniques similar to the The switch Approach [3].

Nexus played the WCCC 2003 in Graz, the ICT 2004 and the DOCCC 2004, where it became runner up behind Diep, the IPCCC 2005 and the Chess960CWC 2005.
Nexus of a chessboard Klein bottle [4] [5] [6]

Selected Games

IsiChess

DOCCC 2004, round 3, Nexus - IsiChess [7] [8]
[Event "DOCCC 2004"]
[Site "Leiden NED"]
[Date "2004.10.16"]
[Round "03"]
[White "Nexus"]
[Black "IsiChess"]
[Result "1-0"]
 
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.e5 Qe7 7.Qe2 Nd5
8.c4 Ba6 9.b3 O-O-O 10.g3 Re8 11.Bb2 f6 12.Bg2 fxe5 13.O-O Nf6 14.Nd2 
e4 15.Qe3 Kb8 16.Rab1 d5 17.b4 Ng4 18.Qa3 Bb7 19.Bd4 a6 20.Qc3 Qd7 
21.f3 exf3 22.Nxf3 Bd6 23.c5 Bf8 24.a4 Re7 25.Bh3 h5 26.Ne5 Qe8 27.Nxc6+ 
Qxc6 28.b5 axb5 29.axb5 Qe8 30.Bxg4 hxg4 31.c6 Re4 32.Ra1 Bb4 33.Qxb4 
Qe5 34.Ba7+ Kc8 35.cxb7+ Kxb7 36.Qa5 Kc8 1-0

The King

DOCCC 2004, round 7, Nexus - The King [9]
[Event "DOCCC 2004"]
[Site "Leiden NED"]
[Date "2004.10.23"]
[Round "7"]
[White "Nexus"]
[Black "The King"]
[Result "1-0"]
 
1. e4 c6 2. d4 d5 3. e5 Bf5 4. Bd3 Bxd3 5. Qxd3 e6 6. Be3 Bb4+ 7. c3 Ba5 8. Nf3
Ne7 9. Nbd2 Nd7 10. O-O h6 11. Nb3 O-O 12. Nh4 Bb6 13. f4 Rc8 14. f5 c5 15. f6
c4 16. Qe2 Ng6 17. Qh5 Ndxe5 18. Bxh6 gxf6 19. Kh1 cxb3 20. dxe5 Nxe5 21. axb3
f5 22. Rae1 Qf6 23. Nxf5 Ng6 24. Bg7 Qxf5 25. Rxf5 Kxg7 26. Rf3 Rh8 27. Qg5 Bd8
28. Qd2 Bb6 29. Ref1 f5 30. g4 Bc7 31. h3 f4 32. Qd4+ Be5 33. Qxa7 Rc7 34. Re1
Kf7 35. Rxe5 Nxe5 36. Rxf4+ Ke7 37. Qb6 Rhc8 38. Qb4+ Kd7 39. Rf6 Re8 40. g5
Nc6 41. Qg4 Rcc8 42. g6 Re7 43. h4 1-0

Forum Posts


External Links


References

  1. ^ Re: Who is Nexus? by Bas Hamstra, CCC, October 24, 2004
  2. ^ Engines written in which programming language? by Andreas Herrmann, Winboard Forum, June 01, 2009
  3. ^ personal communication of the editor with Ralf Dörr in 2004
  4. ^ What is a Klein Bottle?
  5. ^ Nerius Landys and Shad Roundy Klein Bottle Project
  6. ^ Torus Games - players who master the games on the Torus may move on to try them on the more challenging Klein bottle
  7. ^ Re: What is the opinion of Sjeng to the game Nexus-Isichess? by Gian-Carlo Pascutto, CCC, October 18, 2004
  8. ^ Downloads | Open Dutch Computer Chess Championships | Games
  9. ^ Nexus - The King 1-0 (!) by Theo van der Storm, CCC, October 23, 2004

What links here?


Up one Level