Shess

a chess program by Ard van Bergen written in Fortran and successor of PK 83, running at various events on a VAX-11, VAX 8800, MicroVax II and since DOCCC 1989 on a [|Convex C220] mainframe, hosted by [|Royal Dutch Shell]. Its evaluation contains the full databases for three piece endgames (KQK, KRK, KPK), allowing an exact evaluation for any line ending in such an endgame. While pondering, Shess does not prepare a reply to some expected move, but always analyzes the current position and by updating its transposition table it effectively prepares a reply to any move of its opponent. || toc =Tournaments= Shess played the WCCC 1986 in [|Cologne] on a MicroVax II, and the WCCC 1989 in [|Edmonton] (400 nodes per second on a VAX 8800), and eight Dutch Computer Chess Championships, from 1986 until the 1993, best result was a third place at DOCCC 1987.
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 * [[image:Raikkonen_test_Ferrari_F60.jpg link="https://commons.wikimedia.org/wiki/File:Raikkonen_test_Ferrari_F60.jpg"]] ||~  || **Shess**,
 * Another Shell-sponsored engine ||~  ||^   ||

=Games=

Cologne 1986
WCCC 1986, round 4, Shess - Nona code [Event "WCCC 1986"] [Site "Cologne, Germany"] [Date "1986.06.14"] [Round "4"] [White "Shess"] [Black "Nona"] [Result "0-1"]

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qxd4 d5 6. exd6 Nxd6 7. Nc3 Nc6 8. Qf4 Bf5 9. Bd3 Bxd3 10. cxd3 Be7 11. O-O O-O 12. Be3 Bf6 13. h4 Ne7 14. h5 Nef5 15. g4 Bxc3 16. bxc3 Nxe3 17. fxe3 Nb5 18. c4 Nc3 19. Qf5 g6 20. Qe5 Qxd3 21. c5 Rae8 22. Qxc7 Qxe3+ 23. Kg2 Qe6 24. Kg3 Ne4+ 25. Kh4 Nf2 26. Rxf2 Qf6+ 27. Kg3 Qxa1 28. Qxb7 Qc3 29. Qxa7 Ra8 30. Qe7 Rfe8 31. Qd6 Rad8 32. Re2 Rf8 33. Qe5 Rd3 34. Qe4 f5 35. Qe6+ Kh8 0-1 code

Nona again
DOCCC 1987, Nona - Shess code [Event "DCCC 1987"] [Site "Leiden NED"] [Date "1987.10.??"] [Round "?"] [White "Nona"] [Black "Shess"] [Result "1-0"]

1.c4 Nf6 2.d4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bf4 Nc6 6.e3 O-O 7.Bd3 Bd7 8.cxd5 Nxd5 9.Nxd5 exd5 10.O-O g5 11.Bg3 g4 12.Nd2 Nb4 13.Be2 h5 14.Rc1 Rc8 15.a3 Nc6 16.Qb3 Bg5 17.Qxd5 Bxe3 18.fxe3 Qe7 19.Ne4 Nb4 20.axb4 Bc6 21.Qg5+ 1-0 code

Kallisto
DOCCC 1987, Kallisto - Shess code [Event "DCCC 1987"] [Site "Leiden NED"] [Date "1987.10.??"] [Round "?"] [White "Kallisto"] [Black "Shess"] [Result "0-1"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Nf3 O-O 8.Bxf6 Qxf6 9.Bd3 Bg4 10.O-O Nd7 11.e4 Bxf3 12.Qxf3 Qxd4 13.Rad1 Ne5 14.Qh3 h5 15.exd5 Qg4 16.Be2 Qxh3 17.gxh3 Rad8 18.Bxh5 g6 19.Bg4 f5 20.Be2 f4 21.dxc6 bxc6 22.Ne4 f3 23.Ba6 Be7 24.Rxd8 Rxd8 25.Rc1 Kf7 26.b3 Rd4 27.Re1 Ke6 28.Kf1 Bb4 29.Bc8+ Ke7 30.Nd2 Rxd2 31.Rxe5+ Kd8 0-1 code

=External Links=
 * [|Shess' ICGA Tournaments]
 * [|Computerschaak pagina 3] (Dutch)

=References= =What links here?= include page="Shess" component="backlinks" limit="20"
 * Up one level**