With the HP41C programmable calculator, Hewlett Packard handed out an
example program that played a small chess variant on a 5 by 5 board. This
calculator came out around 1980. The
opening setup used in this program was the following:
King a1; Queen b1; Bishop c1; Knight d1; Rook e1; Pawn a2, b2, c2, d2,
King a5; Queen b5; Bishop c5; Knight d5; Rook e5; Pawn a4, b4, c4, d4,
There is no castling; pawns cannot make an initial double step.
This variant was sent to me by Ross Crawford, who remarked:
Very simple, very quick, and the calculator actually played a reasonable
game (after I modified it a bit!)
WWW page made by Hans Bodlaender, based on an email of Ross Crawford.
WWW page created: August 13, 1997.