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Échec,
a chess program by Marc-François Baudot in association with Jean-Christophe Weill.

Tournaments

Échec played following World- and World Microcomputer Chess Championships. In Lyon 1990, Échec became strong runner up, and had even chances to tie or win the title, after gaining an almost winning position versus later winner Mephisto, but only managed a draw by reputation with a draw score of four Pawns from contempt factor:
Event
year
Site
standing
points
10th WMCCC
1990
Lyon
2 / 12
5½ / 7
11th WMCCC
1990
Vancouver
10 / 15
3½ / 7
7th WCCC
1992
Madrid
19 / 22
1½ / 5

Description

from Don Beal's WMCCC 1991 report [1]:
Written by Marc-François Baudot, in association with Jean-Christophe Weill of Cumulus (they collaborate on ideas and code, but have different programs reflecting their different opinions and experiments. Échec's evaluation function includes piece placement relative to pawn structure, pawn structure itself, taking into account of which major or minor pieces are on the board, mobility, etc. (Marc reports that this was badly tuned, with the result that Échec's positional play was poor in the tournament). Search techniques include check extensions but not singular extensions, plus extensions for some mate threats and promotion.

External Links


References

  1. ^ Don Beal (1991). Report on the 11th World Microcomputer Chess Championship. ICCA Journal, Vol. 14, No. 2

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