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8-Piece Chess. (Queen's Army chess, all 8 Back Rank Pieces different).[All Comments] [Add Comment or Rating]
Ben Reiniger wrote on Mon, Sep 16, 2019 07:24 PM UTC:

Nice!


Chess. Play Chess online with other people, using Game Courier, a PBM system that works with any web browser on any computer.[All Comments] [Add Comment or Rating]
Kevin Pacey wrote on Tue, Sep 17, 2019 06:20 AM UTC:

Not sure this is the right place for my comment, as it may apply much more to Game Courier than Chess. Anyway, I was trying to use the Record feature for the chess preset. I entered 1.e2-e4 1.e7-e5 2.f1-c4 b8-c6 3.d1-f3 c6-d4 4.f3-f7 successfully (a version of Scholar's mate trap). However, when I tried to do the same thing but also insert "| 3.g8-f6 //is a better move." after Black's 3rd move, I got an error message saying I cannot move my opponent's piece, after I clicked on the 'View' button (that is, I unsuccessfully tried to enter a variation plus comment after the 3rd Black move of the main continuation).

I'm wondering if Game Courier's Record feature isn't fully working properly. In any event, I've yet to see a single webpage on CVP where a recorded game(s) have been offered by the author, and maybe that's no coincidence. [edit: I had missed the example game using the Record feature on the Voidrider CVP webpage. The moves were given, although no variations were offered (just Comments here and there), but more importantly, perhaps, I couldn't view a board from the Voidrider page for the example game.]


Fairy-Max: an AI for playing user-defined Chess variants. A chess engine configurable for playing a wide variety of chess variants.[All Comments] [Add Comment or Rating]
x-board user wrote on Tue, Sep 17, 2019 09:21 AM UTC:

I use fairymax all the time, since I'm not a great player, but it's challenging enough that it's still hard to beat.  Unfortunately, it seemed to block indefinitely while talking to X-board.  I was curious what was happening since I'm interested in chess engines.  There is a large section on stream blocking, etc on the X-board site. I managed to fix the problem, and happy to report it played gnu-chess in a game on an ARM chromebook computer running the latest linux OS.

I pasted the resulting code here:

https://pastebin.com/Fd4cNpRV


💡📝H. G. Muller wrote on Tue, Sep 17, 2019 03:29 PM UTC:

On my Linux system on an Intel PC I never had any such problems with XBoard + Fairy-Max. Which is the essential change that finally made it work for you? The fflush(stdin)?


8-Piece Chess. (Queen's Army chess, all 8 Back Rank Pieces different).[All Comments] [Add Comment or Rating]
💡📝JT K wrote on Tue, Sep 17, 2019 09:31 PM UTC:

Ben, if you liked the sentry example, here's another one, a bit trickier. White to move and mate in 5:


Wildebeast9. A Variant of Wildebeast Chess.[All Comments] [Add Comment or Rating]
Aurelian Florea wrote on Thu, Sep 19, 2019 01:08 PM UTC:

Nice idea!... Is there anyone interested for a personal challenge?


Interactive diagrams. Diagrams that interactively show piece moves.[All Comments] [Add Comment or Rating]
A. M. DeWitt wrote on Thu, Sep 19, 2019 03:09 PM UTC:

I wonder if there is a way to make a piece capture everything in its path? For example, in Taikyoku Shogi there are range-capturing pieces that destroy everything in their path (including friendly pieces). In Betza 2.0 this behavior could be indicated using cd0. Perhaps the WeirdChain function holds the answer?


💡📝H. G. Muller wrote on Thu, Sep 19, 2019 03:46 PM UTC:

Currently the diagram is limited to a single locust capture. Which already makes the Lion Dog of the large Shogi variants fall beyond its capabilities. If this were solved (e.g. by allowing an array of locust-victim coordinates), the XBetza notation could specify each number of victims separately, e.g. RcdafRcdafcdafR ... Which for a big board like Taikyoku's 36x36 becomes of course very cumbersome.

Perhaps there would be some benefit of extending XBetza notation with a 'repeat count' on a group of modifiers. This would then replace the 'a' modifier. A leading '0' on the number could indicate 'exactly that many', where otherwise it would mean up to that number. So cd02fR would then mean cdafcdafR. Where the expansion rule is that the repeat count would group with preceding modality modifiers, and following directional modifiers. (So that you could still slam an initial directional modifier on the first leg, and a different modality modifier on the last one. That would allow description of the Tenjiku jumping generals as multi-hoppers: Rp14cR or Rp0cR.)


8-Piece Chess. (Queen's Army chess, all 8 Back Rank Pieces different).[All Comments] [Add Comment or Rating]
Ben Reiniger wrote on Thu, Sep 19, 2019 06:13 PM UTC:

Spoiler(?) (should we consider adding a spoiler tag plugin for CKEditor?):

Qxc5+, ke6 // in check both from queen and sentry->lancer
Qd5+, ke7
Qxf7+, kd6 // again doubly checked
Ld2=n+, kc6
S-c6Kd6# // checked by Lancer, no piece to interject; cannot move back to Sentry's square, and Queen and Pawns cover last escape squares.


💡📝JT K wrote on Thu, Sep 19, 2019 10:27 PM UTC:

You’re asking the admin team for Spoiler text as a feature?  Or did you want me to simply post the sequence for now?


Ben Reiniger wrote on Fri, Sep 20, 2019 12:37 AM UTC:

I've put (what I think is) the solution in my last comment, but as an html comment.  You can see it by viewing the page's source code (ctrl+u on most browsers; then ctrl+f to search for "spoiler" should get you there quickly).  I was suggesting/asking whether we (the editors) should pursue adding a spoiler-hiding method and, probably, a button in CKEditor to insert such a spoiler to the site.


H. G. Muller wrote on Fri, Sep 20, 2019 07:36 AM UTC:

A common work-around for spoilers is to print them as white text on a white background. Selecting it then usually makes it visible. This editor doesn't seem to have a button for selection of the font color, though. But of course this could be done through HTML tags. Like below:

This sentence is printed in white.


Ben Reiniger wrote on Fri, Sep 20, 2019 02:32 PM UTC:

Thanks H.G., I've changed my older comment to use the inline-style whiteout.


💡📝JT K wrote on Fri, Sep 20, 2019 03:59 PM UTC:

Nice one Ben, exactly right.  In addition:

Pushing the King to d5 also works, but my original idea- just like your line of thinking, was "return to the square it just left" like in my checkmate example in the Pieces section. Even though it can do a lot, I'm pretty sure the sentry is still just a bit weaker than a bishop (and that's how I wanted it), for example if the sentry were a pinned piece here, it can't perform the final mate move, while a bishop already has it mated. Advantages and disadvantages is what I was going for.

 


MPrandom-start-chess[All Comments] [Add Comment or Rating]
Ben Reiniger wrote on Tue, Sep 24, 2019 02:10 PM UTC:

We don't generally allow users to completely delete an index entry.  I will remove this manually in a few days if you don't want it.


MPsiege-chess[All Comments] [Add Comment or Rating]
Ben Reiniger wrote on Tue, Sep 24, 2019 02:24 PM UTC:

The diagrams need some work (they have various additional markers?), and you don't need to include diagrams for FIDE pieces.


Courier-Spiel. 19th century variant of Courier Chess. (12x8, Cells: 96) [All Comments] [Add Comment or Rating]
Kevin Pacey wrote on Sun, Sep 29, 2019 05:47 PM UTC:

Today I've had an idea for a CV that might be called 'Accelerated Courier-Spiel'. The thought is to try to come up with a modified version of Courier-Spiel that one day just might be significantly more popular with modern day chess (and CV) players.

The rules would be the same as for Courier-Spiel, except:

1) Some form of fast-castling rules would be used - in particular such as those used for my own 'Wide Chess' CV:

https://www.chessvariants.com/rules/wide-chess

2) The 'fool' pieces (move like guards) would be replaced by Archbishops, in the setup (a slight 'rationale' would be that thus for the new setup, one chess minor piece has been knighted [= the Archbishop] and the other chess minor piece has been crowned [= the Centaur]). [edit2: A slightly different setup seems advisible to make these and the other changes most feasible]

3) The pawns would behave as in standard chess, except that they can promote to any piece type in the (modified) setup, except for a king. [edit: if centaurs replaced archbishops in the setup, then the resulting CV idea might be called Centaur-Spiel]

Note I thought about somehow having Chancellors in the setup, too, but given that I wanted 12 non-pawn pieces per side still, I didn't mind excluding Chancellors as I've always worried they might trade each other off too easily in CVs where they can be developed to be able to do so in just one more move, if either player is willing or has no better option. [edit4: Below is an idea that might be called Capa-Spiel; See above for my own suggested castling, pawn rules. edit6: Perhaps it might often be hard to castle kingside completely safely, at least early on, owing to possible pressure by the enemy Q, bishop(s) and chancellor - in any case the position of the Archbishop in the setup might also cause some awkwardness (also the case in the previously diagramed setup, for Accelerated Courier-Spiel):]

[edit: Adding an Archbishop and Centaur to the FIDE army on 10x8 (like for Capablanca Chess' Archbishop and Chancellor addition) might be an interesting concept. edit3: A slightly different setup, after the changes, again seems advisible to me. edit5: The following (reverse symmetry) idea could be called Centaur Princess Chess; pawns would be like in chess, and castling rules would be like in my earlier Wide Chess. edit7: The setup may seriously limit the number of interesting opening variations, at least in the early stages of a game, I fear:]

[edit8: 22-Nov-2019: Currently I'm not liking any of these 3 CV ideas, as in their setups, very much.]

[edit9: Here's an idea of mine (with castling and pawn rules as suggested for my Accelerated Courier-Spiel idea above) that could be called Hurly-Burly Spiel; I'll study it at my leisure:]

Note that wikipedia's entry for Kirins states that 2 of opposite colours can mate a lone K without help from their own K; also, Dr. Muller's results elsewhere indicate that on 12x8, K & 2 fibnifs (also called lancers) can mate a lone K, and he opines that K & 2 horsewazir compound pieces really should be able to mate a lone K.

[edit11: I don't really like this CV too much since neither side has a full FIDE Chess army included, which is why I worked on edit10's CV idea.]

[edit10: Here's another idea of mine, somewhat similar to the last one (i.e. with same castling and pawn rules), which could be called Hurly-Burly Chess; I'll study it at my leisure:]

[edit12: I'm afraid I don't really like this CV idea too much either, since the enemy Archbishop in the setup might make castling queenside often/sometimes a somewhat unsafe idea, and the board is very wide in any case, which makes it especially impractical for over-the-board games (besides trying to recall the setup).edit13: Lately I think I'm worrying too much about possible defects for all these CV ideas.]


Chimera Chess. The highlight of this chess variant are the Chimera pieces, which are substantially enhanced versions of the orthodox Knight.[All Comments] [Add Comment or Rating]
💡📝Albert Lee wrote on Sun, Oct 6, 2019 08:47 AM UTC:

Dear Fergus,

I am the inventor of Chimera chess who posted the description above.

I had a look at the page from my account, and I can see all the images.

Could you please check again? 

 

Thanks,

Albert


About Game Courier. Web-based system for playing many different variants by email or in real-time.[All Comments] [Add Comment or Rating]
Dead Account wrote on Sun, Oct 6, 2019 02:13 PM UTC:

This is one example. I have many more, but this one was published first.


Game Courier. PHP script for playing Chess variants online.[All Comments] [Add Comment or Rating]
Dead Account wrote on Sun, Oct 6, 2019 02:18 PM UTC:

This one.


Chimera Chess. The highlight of this chess variant are the Chimera pieces, which are substantially enhanced versions of the orthodox Knight.[All Comments] [Add Comment or Rating]
Ben Reiniger wrote on Sun, Oct 6, 2019 06:03 PM UTC:

Yes, graphics are present now, and I've unhidden the page.

You might consider renaming the Chimera Rider, since "rider" is a common variant piece descriptor.


H. G. Muller wrote on Sun, Oct 6, 2019 07:20 PM UTC:

As an opposing army for orthodox Chess this seems way too strong. A leaper with 16 targets typically is worth about 7 Pawns, and with 24 targets about 11 Pawns. Together with the Sages, which are about Knight value, this already balances the fide army. But in addition you have the two Flying Jesters, which are major pieces, and should be worth at least a Knight, and more likely about 4 Pawns each.

So pitting this against fide is like being Rook + minor ahead...


Tai Shogi pictures. Photos of a commercially available Tai Shogi set.[All Comments] [Add Comment or Rating]
📝John Lawson wrote on Sun, Oct 13, 2019 11:30 AM UTC:

I still have an old price list, and George Hodges did not make a Taikyoku Shogi set.


Testing[Subject Thread] [Add Response]
🕸Fergus Duniho wrote on Tue, Oct 15, 2019 03:02 PM UTC:

Testing.


H. G. Muller wrote on Tue, Oct 15, 2019 05:20 PM UTC:

Well, now you are testing, perhaps you can also test this: when I was submitting my latest chess variant, the submission form was using cached data every time I opened it to make a change. With as a result that the modifications I made would have disappeared next time I opened the input form, unless I would first refresh it with Shift + Load to ignore cached data.

I am not sure if this is just a problem with my FireFox settings, but it seems very undesirable behavior.


Greg Strong wrote on Tue, Oct 15, 2019 10:45 PM UTC:

I had this problem in the past but I thought it had been resolved ... six months ago maybe?


🕸Fergus Duniho wrote on Wed, Oct 16, 2019 01:24 AM UTC:

Testing again. The host says " Virtual server not found ", but pages are showing up, and I was able to log in. I haven't been able to move in Game Courier all day. I get 520 errors when I try to, but I've seen that other people have moved today.


🕸Fergus Duniho wrote on Wed, Oct 16, 2019 03:30 PM UTC:

As far as I can tell, there is a problem with the server. It is somehow partly online and partly offline, and it is also affecting my blog, which has its own domain. I have submitted a ticket about this to the hosting service, and they will hopefully do something about it.


🕸Fergus Duniho wrote on Thu, Oct 17, 2019 04:14 PM UTC:

Although I haven't got a response to my ticket, and the host still says "Virtual server not found", things do appear to be working again.


🕸Fergus Duniho wrote on Thu, Oct 17, 2019 04:33 PM UTC:

I just checked my page rules on Cloudflare. They are set to cache drawdiagram.php and to bypass the cache for all other PHP scripts. In case it helps, I just chopped the "www." part off of the URLs. From what I understand of the documentation, this is not required.


Veteran Chess. Most pieces can or must irreversibly promote when they capture.[All Comments] [Add Comment or Rating]
Greg Strong wrote on Fri, Oct 18, 2019 01:57 AM UTC:Excellent ★★★★★

A very interesting game.  And you have the interactive diagram using our signature Alfaerie pieces and colors!  I love it :)


💡📝H. G. Muller wrote on Fri, Oct 18, 2019 08:15 AM UTC:

Alfaerie is one of the six preconfigured settings in the design wizard for the interactive diagram, (setting the right values for the image directory, square size, white/black prefix and graphics type at the press of a button), and in fact the default choice. Other buttons give you Abstract, Motif, Utrecht, 2 sizes XBoard presets. And of course you could use your own uploaded graphics, by supplying the location and other parameters to the design wizard explicitly.

For the pieces I needed Alfaerie was not too bad. I had to improvise a bit for the (Mounted) Veteran, using the Wazir(-Knight) instead, thus only indicating the non-capture move correctly. But that seemed acceptible.

Some of the other Alfaerie pieces look embarrasingly simplistic (e.g. Elephant), so I usually prefer the XBoard theme when I need any of those. Even the orthodox pieces look pretty ugly in Alfaerie; they are not anti-aliased, giving them a very ragged appearance. This is so 20th-century... I think it is high time someone would take the trouble replacing all the Alfaerie image files by anti-aliased versions (with alpha channel).

versus  

BTW, I am happy you like Veteran Chess. I have not programmed it into any engine yet, but I play-tested it against a regular participant of the Dutch Superchess championship over the board, and it seemed quite playable. That 1:1 trading is discouraged by leaving the opponent with a promoted piece seems compensated well enough by that in 2:1 trading you can promote your second piece to compensate for the loss of the first. E.g. a Pawn protected by a Pawn is pretty much unassailable in orthodox Chess, but here after BxP, PxP, NxP=M promoting the Knight to a Rook-class piece plus capture of two Pawns seems enough compensation for the Bishop. So you don't get into stand-off situations too easily.


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