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Interactive diagrams. Diagrams that interactively show piece moves.[All Comments] [Add Comment or Rating]
Aurelian Florea wrote on Sun, Dec 26, 2021 06:19 PM UTC:

Hello HG, While testing the interactive diagram on grand apothecary chess alert I have noticed that the joker imitating a berolina pawn has moved 5 spaces. This is probably because the berolina pawn is defined like this mfF*fceW and that means the joker inherited the ability to move as much as to the center of the board. But the rules of the games, as I had made them state : "A joker imitating a pawn has only the regular moves, no double step, no enpassant and no promotion even if that pawn has promoted the last move."

In the game courier I had created a special case for when the joker imitates a pawn to get the moves of a fictious barren pawn that does not promote, and gets no double steps or en passat. But I don't think that can be done here. Can it?

Here is the game that led to this situation:

{770295349} 1. f7 Xi8 2. e6 Wb10 3. d5 Wk10 4. Bd4 Ig9 5. g7 h9 6. f8 Ii7 7. Gi5 Ik9 8. f6 Uk8 9. Me4 Ig6 10. Mf4 Gd9 11. Of3 Id10 12. Wf5 Oj9 13. Wig5 Fb9 14. Xe7 Ji10

Grand Apothecary chess alert can be found here:

https://www.chessvariants.com/rules/grand-apothecary-chess-alert