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Betza notation (extended). The powerful XBetza extension to Betza's funny notation.[All Comments] [Add Comment or Rating]
Aurelian Florea wrote on Fri, Oct 4, 2024 10:18 AM UTC:

I need a maorider+moarider compound, but I can't find the correct string. Can anyone help?


HaruN Y wrote on Fri, Oct 4, 2024 10:28 AM UTC in reply to Aurelian Florea from 10:18 AM:
Maorider: afz(afzafz)W
Moarider: afz(afzafz)F
Moorider: afz(afzafz)K

Aurelian Florea wrote on Fri, Oct 4, 2024 11:44 AM UTC in reply to HaruN Y from 10:28 AM:

Thanks!


GnomeChamp wrote on Sat, Dec 7, 2024 08:25 AM UTC:

The codes that you gave for the Lion does not allow you to pass your turn (like you can in chu shogi) by moving the lion and then moving it back to its starting square. How would you define a code that allows you to effectively pass your turn by moving a double mover (without a capture) away from and then back to its starting square?


💡📝H. G. Muller wrote on Sat, Dec 7, 2024 12:54 PM UTC in reply to GnomeChamp from 08:25 AM:

The Chu-Shogi Lion's turn pass can be written as mabK or [K-bK]. But there is no way to enter a turn pass in the Interactive Diagram. Since the Diagram does not enforce turn order, though, you can pass a turn in any Diagram by simply playing two moves for the other side in a row. If you want the AI to play the extra move you can use the Move button. It messes up the game notation, though. Perhaps I should let the notation code detect this, and insert a null move (e.g. --).

I can add that even though the rules in Chu Shogi do allow you to pass a turn in some situations, I so far could not imagine any position where this would be a good move.


HaruN Y wrote on Sun, Dec 8, 2024 03:19 AM UTC in reply to GnomeChamp from Sat Dec 7 08:25 AM:

You can write the piece ID & then the square it is on.

e.g. if you want R on h4 to do a null move then write "Rh4" then paste it in the move list.


💡📝H. G. Muller wrote on Sun, Dec 8, 2024 07:38 AM UTC in reply to HaruN Y from 03:19 AM:

That would be a possibility. But not all variants that do allow turn pass associate this turn pass with a piece. And when different pieces can do a null move, you would have different notations for the same move. Of course you coould always associate a null move with the King, which should always be there.

But the conventional solution used by interfaces for orthodox Chess is to write them as 'pass' or '--'. Although in Chess these are of course illegal, many interfaces allow them during interactive analysis. Where it can be important to answer the question "what is the threat I am facing in this position".

Th problem here is not how to write the turn pass, but that the I.D. currently is not aware at all that when two moves of the same player are done in a row a turn pass should be inserted between them. Hence the notation gets 'out of phase'. Which is fatal for reading it back, as SAN does not explicitly encode the color of the moving piece. Nf6 could mean either a white or black Knight. For two Knights of the same color being able to make that move it would add disambiguation, like Ngf6, but not if a Knight of the opponent can make the same move. When it encounters Nf6, it only looks for Knights of the color that it expects to be on move, which only follows from the sequence number of the move in the game record to be even or odd.

So I guess that before adding a move to the game it should first check whether the color of the moved piece corresponds to the even/oddness of its sequence number, and if not insert the turn pass before adding the move.


Jörg Knappen wrote on Sun, Dec 8, 2024 10:51 AM UTC in reply to HaruN Y from Fri Oct 4 10:28 AM:

Is it really the combination of Maorider + Moarider that you describe here

Moorider: afz(afzafz)K

Or does your description allow the rider for each step choosing again between Mao and Mao steps? A simple combination piece must choose one step pattern (Mao or Moa) for all of its steps.


HaruN Y wrote on Sun, Dec 8, 2024 02:01 PM UTC in reply to Jörg Knappen from 10:51 AM:
The former.
There is an XBetza Sandbox to try out the XBetza notation on this page.

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