RosettaCodeData/Task/Generate-Chess960-starting-position/Seed7/generate-chess960-starting-position.seed7
2015-02-20 09:02:09 -05:00

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555 B
Text

$ include "seed7_05.s7i";
const proc: main is func
local
var string: start is "RKR";
var char: piece is ' ';
var integer: pos is 0;
begin
for piece range "QNN" do
pos := rand(1, succ(length(start)));
start := start[.. pred(pos)] & str(piece) & start[pos ..];
end for;
pos := rand(1, succ(length(start)));
start := start[.. pred(pos)] & "B" & start[pos ..];
pos := succ(pos) + 2 * rand(0, (length(start) - pos) div 2);
start := start[.. pred(pos)] & "B" & start[pos ..];
writeln(start);
end func;