Minimax+(program)

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a didactic open source chess program written in QuickBASIC by Dieter Steinwender and Chrilly Donninger, which appeared 1995 in Steinwender's and Friedel's German book //Schach am PC//. The program is apparently based on Donninger's 1994 C program with the same name, and a program published by Steinwender in Computerschach und Spiele 1984. Minimax features a Mailbox board representation with offset move generation, aspiration alpha-beta search within an iterative deepening framework. Minimax has been converted to a WinBoard chess engine by Thomas McBurney in 2003. Martin Bauer ported Minimax to Delphi and further applied enhancements for the UCI compliant DelphiMax.  =Mailbox= Initial Position in Basic code format="qbasic" CONST BrettDim% = 119 ' Dimension des erweiterten Schachbrettes
 * Minimax**,

DIM SHARED Grundstellung(BrettDim%) AS INTEGER

FOR i% = 0 TO BrettDim% READ Grundstellung(i%) NEXT i%

DATA 100,100,100,100,100,100,100,100,100,100 DATA 100,100,100,100,100,100,100,100,100,100 DATA 100, 2, 4 , 3 , 5 , 6 , 3 , 4 , 2 ,100 DATA 100, 1, 1 , 1 , 1 , 1 , 1 , 1 , 1 ,100 DATA 100, 0, 0 , 0 , 0 , 0 , 0 , 0 , 0 ,100 DATA 100, 0, 0 , 0 , 0 , 0 , 0 , 0 , 0 ,100 DATA 100, 0, 0 , 0 , 0 , 0 , 0 , 0 , 0 ,100 DATA 100, 0, 0 , 0 , 0 , 0 , 0 , 0 , 0 ,100 DATA 100,-1 ,-1 ,-1 ,-1 ,-1 ,-1 ,-1 ,-1 ,100 DATA 100,-2 ,-4 ,-3 ,-5 ,-6 ,-3 ,-4 ,-2 ,100 DATA 100,100,100,100,100,100,100,100,100,100 DATA 100,100,100,100,100,100,100,100,100,100 code and the same Mailbox in C : code format="cpp"
 * 1) define BRETT_DIM   120  /* Dimension des erweiterten Schachbrettes  */

/**
 * Figuren. Schema: _
 * 1) define S_K  -6          /* Kennung fuer Schwarze Figuren */
 * 2) define S_D  -5
 * 3) define S_S  -4
 * 4) define S_L  -3
 * 5) define S_T  -2
 * 6) define S_B  -1
 * 7) define LEER  0          /* Leeres Feld */
 * 8) define W_B   1          /* Kennung fuer weisse Figuren */
 * 9) define W_T   2
 * 10) define W_L   3
 * 11) define W_S   4
 * 12) define W_D   5
 * 13) define W_K   6
 * 14) define RAND 100         /* Umrandung des Schachprogrammes */
 * 1) define RAND 100         /* Umrandung des Schachprogrammes */

/** const int GrundStellung[BRETT_DIM] = { RAND,RAND,RAND,RAND,RAND,RAND,RAND,RAND,RAND,RAND, RAND,RAND,RAND,RAND,RAND,RAND,RAND,RAND,RAND,RAND, RAND,W_T, W_S ,W_L ,W_D ,W_K ,W_L ,W_S ,W_T, RAND, RAND,W_B, W_B ,W_B ,W_B ,W_B ,W_B ,W_B ,W_B, RAND, RAND,LEER,LEER,LEER,LEER,LEER,LEER,LEER,LEER,RAND, RAND,LEER,LEER,LEER,LEER,LEER,LEER,LEER,LEER,RAND, RAND,LEER,LEER,LEER,LEER,LEER,LEER,LEER,LEER,RAND, RAND,LEER,LEER,LEER,LEER,LEER,LEER,LEER,LEER,RAND, RAND,S_B ,S_B ,S_B ,S_B ,S_B ,S_B ,S_B ,S_B, RAND, RAND,S_T, S_S ,S_L ,S_D ,S_K ,S_L ,S_S ,S_T, RAND, RAND,RAND,RAND,RAND,RAND,RAND,RAND,RAND,RAND,RAND, RAND,RAND,RAND,RAND,RAND,RAND,RAND,RAND,RAND,RAND}; code
 * Grundstellung auf 10x12 Brett

=See also=
 * Betsabe
 * DelphiMax
 * Kanguruh
 * Minimax
 * Nimzo

=Forum Posts=
 * [|WBEC-Ridderkerk new results] by Leo Dijksman, Winboard Forum, August 14, 2003
 * [|MiniMAX und seine Derivate] by lovo, [|Schachfeld.de], June 24, 2009 (German)

=External Links=
 * [|minimax - basic-source] by Dieter Steinwender and Chrilly Donninger, hosted by Roger Thormann
 * [|minimax - c-source] by Chrilly Donninger, hosted by Roger Thormann
 * [|minimax - c-source - header file] by Chrilly Donninger, hosted by Roger Thormann
 * [|Minimax in BASIC] converted to WinBoard by Thomas McBurney
 * [|Minimax] from WBEC Ridderkerk
 * [|SEPTOBER - Informationen zu Computerschach] by Herbert Marquardt has Minimax Screenshot
 * [|Bauer & Schweitzer - Webdesign, Software, Shareware, Freeware, EDV - MiniMAX and DelphiMax] by Martin Bauer (German)

=References= =What links here?= include page="Minimax (program)" component="backlinks" limit="40"
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