Generate random chess position: Difference between revisions

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m (reprhasing)
(precision about the picking of pieces.)
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* the kings must not be placed on adjacent squares;
* the kings must not be placed on adjacent squares;
* there can not be any pawn in the promotion square (no white pawn in the eighth rank, and no black pawn in the first rank);
* there can not be any pawn in the promotion square (no white pawn in the eighth rank, and no black pawn in the first rank);
* in addition to the kings, 0 up to 32 pieces of either color can be added. There is no requirement for material balance between sides;
* including the kings, up to 32 pieces of either color can be added. There is no requirement for material balance between sides; The picking of pieces does not have to comply to a regular chess set : there can be five knights, twenty rooks, as long as the total number of pieces do not exceed thirty-two.
* it is white's turn, it is assumed that both sides have lost castling rights and that there is no possibility for *en passant* (the FEN should thus end in <tt>w - - 0 1</tt>);
* it is white's turn, it is assumed that both sides have lost castling rights and that there is no possibility for *en passant* (the FEN should thus end in <tt>w - - 0 1</tt>);