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This item is a desktop publishing resource
It belongs to categories: Orthodox chess, 
It was last modified on: 2016-04-09
 By Fergus  Duniho. Diagram Designer. Lets you display diagrams without uploading any graphics.[All Comments] [Add Comment or Rating]
Greg Strong wrote on 2020-09-20 UTC

Ok, I have removed extra whitespace from all piece sets and verified that they all now work in diagram designer.


Fergus Duniho wrote on 2020-09-20 UTC

Ok, maybe I see. Since the space is outside the ?> it gets incorporated into the output stream?

Yes. Unlike Game Courier, which saves an image file to the server, drawdiagram.php simply becomes the image file. So, it's output has to be a pure image file. Since the set file gets included in it, that set file must be free of any text output.


Greg Strong wrote on 2020-09-19 UTC

I am referring to a space in the php file that defines the piece set, not the image file created by the script. The diagram designer executes php code to dynamically create and return a binary image, right? Why would whitespace in the php source code of a program affect its output?

Update: Ok, maybe I see. Since the space is outside the ?> it gets incorporated into the output stream?


Fergus Duniho wrote on 2020-09-19 UTC

The piece sets that don't work with diagram designer all have an extra carriage return at the end.

That makes perfect sense. While the Game Courier scripts create an HTML page, the drawdiagram.php script used by the Diagram Designer produces an image file. If that image file contains any text, even a white space, it is corrupted.


Greg Strong wrote on 2020-09-19 UTC

With some extensive testing I've been able to figure out the issue, although I don't understand it. The piece sets that don't work with diagram designer all have an extra carriage return at the end. Remove it, and they work fine. Take a file that works, put an extra blank line after the ?> line, and it breaks. Very odd for whitespace to break code...


Greg Strong wrote on 2020-09-18 UTC

Oh, ok. I guess that makes sense. Unfortunately, that means the diagram designer can't show uncheckered boards, but that's not critical.


Fergus Duniho wrote on 2020-09-18 UTC

Also, in Game Courier, if there is only one square color, it will draw outlines around the squares as shown in this preset: https://www.chessvariants.com/play/pbm/play.php?game%3DMaorider+Chess%26settings%3Ddefault But Diagram Designer doesn't do this. It just shows a solid board with nothing to separate the squares.

That's a feature of the Table rendering method, which the Diagram Designer does not use. Game Courier does not do this for the GIF, JPG, or PNG methods.


NEW! This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2020-09-04
 By Daphne  Snowmoon. Nine elders. Sittuyin + Shogi.[All Comments] [Add Comment or Rating]
Daphne Snowmoon wrote on 2020-09-18 UTC

Can this be published please?


This item is a desktop publishing resource
It belongs to categories: Orthodox chess, 
It was last modified on: 2016-04-09
 By Fergus  Duniho. Diagram Designer. Lets you display diagrams without uploading any graphics.[All Comments] [Add Comment or Rating]
Greg Strong wrote on 2020-09-18 UTC

Some piece sets still won't render a board with diagram designer although all the individual pieces show correctly. My earlier speculation that it involves sets with "for" in the title appears to be incorrect, or there is more to it. The ones that fail all seem to have "for" in the name, but some others containing "for" do work.

Also, in Game Courier, if there is only one square color, it will draw outlines around the squares as shown in this preset: https://www.chessvariants.com/play/pbm/play.php?game%3DMaorider+Chess%26settings%3Ddefault But Diagram Designer doesn't do this. It just shows a solid board with nothing to separate the squares.


This item is a play-by-email page
It belongs to categories: Orthodox chess, 
It was last modified on: 2015-12-13
 Author: Carlos  Cetina. Inventor: Kevin  Pacey. Sac Chess. Play classical chess along with classical compound pieces: amazons, chancellors, archbishops...[All Comments] [Add Comment or Rating]
Fergus Duniho wrote on 2020-09-18 UTC

My opponent is having trouble moving in the following game of ours

I didn't notice any problem when I tried moving as him. If the problem is with using the mouse or touchscreen to move, he should update to a more recent browser or report which browser and device he is using.


Kevin Pacey wrote on 2020-09-18 UTC

My opponent is having trouble moving in the following game of ours - maybe the log/preset is broken, or maybe there's a technical problem like Carlos had in another Sac Chess game between himself and me?:

https://www.chessvariants.com/play/pbm/play.php?game=Sac+Chess&log=panther-cvgameroom-2020-217-110


This item is a miscellaneous item
It belongs to categories: Orthodox chess, 
It was last modified on: 2015-12-11
 Author: Fergus  Duniho. Home page of The Chess Variant Pages. Missing description[All Comments] [Add Comment or Rating]
Fergus Duniho wrote on 2020-09-18 UTC

It showed up when I looked at it. Since game pages are cached, and scripts are not, there will sometimes be a delay before a new comment shows up on the page it was posted to, but there won't be any delay in it showing up on the comments page. There is no problem with the code. It is simply that the code is not run when displaying a cached page.


Greg Strong wrote on 2020-09-18 UTC

Something seems wrong with the code that displays comments on a game page. This page: https://www.chessvariants.com/41.dir/2pipe.html does not show my most recent comment on the page, but if you view all comments, then it does appear.


This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2001-04-18
 By Doug  Chatham. Two Pipe Chess. Setup on 41-squares board looks like two tobacco pipes. (9x5, Cells: 41) [All Comments] [Add Comment or Rating]
Greg Strong wrote on 2020-09-17 UTC

Although the rules don't state it, pawns on the first rank can move two spaces, subject to en passant capture. I determined this by looking at the Zillions implementation.


This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2001-05-15
 Author: Hans L. Bodlaender. Inventor: Jari  Huikari. Insane. Pieces change to random type when they move. With program playing this variant.[All Comments] [Add Comment or Rating]
Greg Strong wrote on 2020-09-17 UTC

What if a piece randomly changes into a pawn on the first or second rank? Can it then move two spaces? What about the eighth rank? Does it then promote? Or is it stuck forever?

The rules don't seem to address any of this.


NEW! This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2020-09-10
 By Omega  Fallon. Copycat chess. Variant centered around piece which copy, and also a cat is there.[All Comments] [Add Comment or Rating]
Ben Reiniger wrote on 2020-09-15 UTC

This also needs an opening setup diagram. You could try it with the Diagram Designer if you'd like.


NEW! This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2020-09-08
 By Tomasz  Sobczyk. Tax Chess. King mobility affected by the placement of pawns of the same color.[All Comments] [Add Comment or Rating]
Ben Reiniger wrote on 2020-09-15 UTC

This is interesting. I'd like a more descriptive name for the variant, but I don't have one to suggest right now...


This item is an unknown type!
It belongs to categories: Orthodox chess, 
It was last modified on: 2003-01-05
 By Fergus  Duniho. Game Courier. PHP script for playing Chess variants online.[All Comments] [Add Comment or Rating]
Fergus Duniho wrote on 2020-09-13 UTC

Also, the Marseillais Chess preset is exiting with an error as soon as you click the button for it on the game's Game Courier Preset page.

There were a couple typos in the include file for that game. I have now fixed them.


Fergus Duniho wrote on 2020-09-13 UTC

I encountered a bug when using presets I made for large Shogi variants such as Chu Shogi. The bug prevents the blue boxes that highlight legal moves from being displayed for the second part of a double move. Apart from that, everything works normally. I also tried this with the Balanced Marseillais Chess preset, but the bug was not present there. Any ideas as to what's causing this?

It wasn't correctly handling the move "pass". I made an adjustment so that it now works.


Adam DeWitt wrote on 2020-09-13 UTC

I encountered a bug when using presets I made for large Shogi variants such as Chu Shogi. The bug prevents the blue boxes that highlight legal moves from being displayed for the second part of a double move. Apart from that, everything works normally. I also tried this with the Balanced Marseillais Chess preset, but the bug was not present there. Any ideas as to what's causing this?

Also, the Marseillais Chess preset is exiting with an error as soon as you click the button for it on the game's Game Courier Preset page.


UPDATED! This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2020-09-11
 Author: Greg  Strong. Inventor:    Peguilhen. The Sultan's Game. (Updated!) Variant on 11 by 11 board from 19th century Germany. (11x11, Cells: 121) [All Comments] [Add Comment or Rating]
Greg Strong wrote on 2020-09-11 UTC

I have rewritten most of this page with updated information from Jean-Louis Cazaux's excellent new book A World of Chess, co-authored with Rick Knowlton. The previous version had the initial setup incorrect (both of a player's bishops on the same color) and incorrectly identified the author of a book on chess variants as the game's inventor. Additional historical information has also been added.

I still need to make a similar revision to The Emperor's Game


This item is a reference work
It belongs to categories: Orthodox chess, 
It was last modified on: 2015-07-07
 By Glenn  Nicholls. Summary of Game variations, Clock times and other Information. Missing description[All Comments] [Add Comment or Rating]
Greg Strong wrote on 2020-09-11 UTC

This page is a mess which, in my view, should not have been published. If there are over 30 variants to Tiger Chess, they should be listed on that page, not here, were no one would find them anyway - since the name of the page, "Summary of Game variations, Clock times and other Information", does not indicate what it is.

If you'd like to format this variant information in reasonable HTML, I will happily add it to the bottom of the Tiger Chess page. But I am scheduling this page for deletion a month from now. If nothing further is done, I will add a comment to the Tiger Chess page linking to archive.org's copy of this page so that those interested in Tiger Chess will still be able to find it.


NEW! This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2020-09-10
 By JT  K. Full Cavalry. Rooks are replaced by Lancers and castling is still legal.[All Comments] [Add Comment or Rating]
JT K wrote on 2020-09-11 UTC

Makes sense, and thank you for the compliment. I figure it would be more approachable and manageable for ChessV than 8-Piece Chess (despite my personal love of the latter).


NEW! This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2020-09-11
 By Davor  Vujacic. 88 Hexagons Chess. Hexagonal chess on chessboard with 88 hexagons.[All Comments] [Add Comment or Rating]
Greg Strong wrote on 2020-09-11 UTC

Posted. Interesting looking game!

I converted the graphics to PNG so I could make the backgrounds transparent. The backgrounds were white and the web page background is not white. I may make some small edits to the HTML formatting later, but for now it is pretty good.


NEW! This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2020-09-10
 By JT  K. Full Cavalry. Rooks are replaced by Lancers and castling is still legal.[All Comments] [Add Comment or Rating]
Greg Strong wrote on 2020-09-11 UTC

You're welcome.

Yes, ChessV is still in development, off-and-on. New versions will be forthcoming, but I make no guarantees about what they will include. The effort involved with programming support for the Lancer is probably "moderate". But there is an almost infinite list of things that should be added, and honestly, there are many that are desired by a larger group of users. But it may happen at some point. It is an interesting piece.


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