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@ Gerd Degens[All Comments] [Add Comment or Rating]
H. G. Muller wrote on Mon, Feb 19 03:09 PM UTC in reply to Gerd Degens from 01:34 PM:

Well, it seems I remember things I did that I really did not do at all, but was just planning to do. Not even the new version of the PTA stores the morphs boards in GAME code. And the GAME-code include file does support morph board only form automatic type change, not the case where you have choice.

But fortunately what you want seems possible without using morph. I guess what you did was make the promotion zone the entire board to have the back rank in it, but that makes the white and black zone overlap, and this is what the GAME code cannot handle. But for what you want it is not needed to have overlapping zones, and each zone can only be reached by Pawns of the color that promote there. If that is the case the generated GAME code can handle it through its regular promotab. You just have to make that

set promotables (P p);
set promotab (
  (Q R B N)
  0
  0
  0
  0
  0
  0
  (q r b n)
);

That is how it would also look for orthodox Chess, except that the white and the black pieces are now swapped. For each piece in the 'promotables' it looks in the 'promotab' at the rank it moves to, and if that is not 0 it is considered a promotion rank, and contains the possible choices.

As to the game: I don't see why players would ever choose anything other than Queen. Despite the limited range it is still far stronger than any of the other pieces. It has 16 unblockable targets; the Rook and Bishop have only 12. The Knight potentially has 16, but never on 8x8.