Variable: landmark-score-trans-table

landmark-score-trans-table is a variable defined in landmark.el.gz.

Value

[7 15 400 1800 100000 0 35 0 0 0 0 0 800 0 0 0 0 0 15000 0 0 0 0 0
   800000 0 0 0 0 0 0]

Documentation

Vector associating qtuple contents to their score.

Source Code

;; Defined in /usr/src/emacs/lisp/obsolete/landmark.el.gz
(defconst landmark-score-trans-table
  (let ((Xscore		15)  ; Score of a qtuple containing one X.
        (XXscore       400)  ; Score of a qtuple containing two X's.
        (XXXscore     1800)  ; Score of a qtuple containing three X's.
        (XXXXscore  100000)  ; Score of a qtuple containing four X's.
        (Oscore		35)  ; Score of a qtuple containing one O.
        (OOscore       800)  ; Score of a qtuple containing two O's.
        (OOOscore    15000)  ; Score of a qtuple containing three O's.
        (OOOOscore  800000)) ; Score of a qtuple containing four O's.

    ;; These values are not just random: if, given the following situation:
    ;;
    ;;			  . . . . . . . O .
    ;;			  . X X a . . . X .
    ;;			  . . . X . . . X .
    ;;			  . . . X . . . X .
    ;;			  . . . . . . . b .
    ;;
    ;; you want Emacs to play in "a" and not in "b", then the parameters must
    ;; satisfy the inequality:
    ;;
    ;;		   6 * XXscore > XXXscore + XXscore
    ;;
    ;; because "a" mainly belongs to six "XX" qtuples (the others are less
    ;; important) while "b" belongs to one "XXX" and one "XX" qtuples.
    ;; Other conditions are required to obtain sensible moves, but the
    ;; previous example should illustrate the point.  If you manage to
    ;; improve on these values, please send me a note.  Thanks.


    ;; As we chose values 0, 1 and 6 to denote empty, X and O squares,
    ;; the contents of a qtuple are uniquely determined by the sum of
    ;; its elements and we just have to set up a translation table.
    (vector landmark-nil-score Xscore XXscore XXXscore XXXXscore 0
            Oscore       0	0	0	 0	   0
            OOscore      0	0	0	 0	   0
            OOOscore     0	0	0	 0	   0
            OOOOscore    0	0	0	 0	   0
            0))
  "Vector associating qtuple contents to their score.")