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Spherical chess. Sides of the board are considered to be connected to form a sphere. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
🕸📝Fergus Duniho wrote on Wed, Jul 28, 2021 02:40 AM UTC:

I started on adding an introduction, but it's late, and I will have to wait until tomorrow to continue.


NOST: kNights Of the Square Table. kNights Of the Square Table.[All Comments] [Add Comment or Rating]
🕸📝Fergus Duniho wrote on Wed, Jul 28, 2021 06:21 PM UTC:

Are there any former NOST members around with back issues of NOSTalgia that could be scanned and put on the internet? The NOST website had only a few of the latest issues. Pritchard sometimes used it as a source for his Encyclopedia of Chess Variants, but his descriptions of games are often sketchy rather than complete.


All Out. Members-Only The pieces are dropped one at a time, remaining immobile until the king is dropped.[All Comments] [Add Comment or Rating]

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Spherical chess. Sides of the board are considered to be connected to form a sphere. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
🕸📝Fergus Duniho wrote on Thu, Jul 29, 2021 05:32 PM UTC:

I have updated this page with diagrams and more detailed descriptions.


Pandemonium (Surajang修羅場). Capablanca chess + Crazyhouse.[All Comments] [Add Comment or Rating]
💡📝Daphne Snowmoon wrote on Fri, Jul 30, 2021 03:47 AM UTC:

Some pieces have been renamed

Van -> Wazir (Movement also changed: D -> W)

Ferz(Sa士) -> Ferz(In刃)


Hostage Chess ZIP file. Pieces taken are held hostage and can be exchanged against other pieces and then dropped.[All Comments] [Add Comment or Rating]
🕸📝Fergus Duniho wrote on Sat, Jul 31, 2021 09:49 PM UTC:

John Leslie noticed some bugs in the previous version, and I found out that the latest version on my computer had already fixed those bugs. So I included it in a new zip file with some changes to the initial comments.


Spherical chess. Sides of the board are considered to be connected to form a sphere. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
Bn Em wrote on Mon, Aug 2, 2021 05:04 PM UTC:

While on its own the original diagram on this page was a bit obscure, in conjunction with Fergus' circular diagrams it really clarifies the rationale behind Nadvorney's interpretation of the diagonal move; a bit of thought also reveals why Miller's reasoning in keeping the bishop on its own colour is flawed: if the bishop stays on its own colour you would expect a rook stepping over the pole to change colour as it does on a normal square‐cell board, whereas here (or on any spherical/Klein‐bottle‐shaped board with a multiple of four files) it doesn't. On e.g. a 10‐file board, Miller's reasoning would line up with Nadvorney's.

As for Chess on the Dot, the change in the diagonal's handedness at the poles also keeps it on one colour (on a board of this parity), but isn't stirctly necessary for a closed loop: Nadvorney's version (as can be seen on its diagram) does it just as well, and even Miller's manages, albeit via a much more circuitous route.

Fwiw, here's the original diagram as salvaged from the Internet Archive:

c7  d7  e7  f7  g7  h7  a7  b7  c7  d7  e7  f7
c8  d8  e8  f8  g8  h8  a8  b8  c8  d8  e8  f8
g8  h8  a8  b8  c8  d8  e8  f8  g8  h8  a8  b8
g7  h7  a7  b7  c7  d7  e7  f7  g7  h7  a7  b7
g6  h6  a6  b6  c6  d6  e6  f6  g6  h6  a6  b6
g5  h5  a5  b5  c5  d5  e5  f5  g5  h5  a5  b5
g4  h4  a4  b4  c4  d4  e4  f4  g4  h4  a4  b4
g3  h3  a3  b3  c3  d3  e3  f3  g3  h3  a3  b3
g2  h2  a2  b2  c2  d2  e2  f2  g2  h2  a2  b2
g1  h1  a1  b1  c1  d1  e1  f1  g1  h1  a1  b1
c1  d1  e1  f1  g1  h1  a1  b1  c1  d1  e1  f1
c2  d2  e2  f2  g2  h2  a2  b2  c2  d2  e2  f2 

🕸📝Fergus Duniho wrote on Tue, Aug 3, 2021 02:24 AM UTC in reply to Bn Em from Mon Aug 2 05:04 PM:

All I did to the original diagram was change its formatting to make it easier to read. I got the idea for putting a box around the main board from Pritchard, who did the same, but unlike him, I left all the inner coordinates in.


🕸📝Fergus Duniho wrote on Tue, Aug 3, 2021 02:34 AM UTC in reply to Bn Em from Mon Aug 2 05:04 PM:

On e.g. a 10‐file board, Miller's reasoning would line up with Nadvorney's.

That's a good point. On a 10-file board, the files would surround the pole in a way that makes diagonal movement more intuitive, and once the board was defined, it would be easy to make spherical adaptations of various 10x8 variants like Grotesque Chess and other related games or 10x10 variants like Grand Chess.


Amazonia. 11x11 board with Pawns that promote to Princesses in the middle of the board.[All Comments] [Add Comment or Rating]
💡📝Albert Lee wrote on Tue, Aug 3, 2021 03:01 AM UTC:

This post is ready for publication.


Chess vs Strong Makruk. Chess against an enhanced Makruk army in an 8x8 board.[All Comments] [Add Comment or Rating]
💡📝Albert Lee wrote on Tue, Aug 3, 2021 03:01 AM UTC:

This post is ready for publication.


Apothecary Chess Tournament[Subject Thread] [Add Response]
Aurelian Florea wrote on Tue, Aug 3, 2021 03:51 AM UTC:

I have assigned the round six games!


2.Manticore and 2. Griffin ?[Subject Thread] [Add Response]
Bn Em wrote on Wed, Aug 4, 2021 01:08 AM UTC in reply to Aurelian Florea from Sat Jun 12 12:30 PM:

Charles Gilman called these Zephyr and Lama respectively, though by his description they cannot make the one‐step move that I'm not sure whether you're including. The latter also turns up as an Osprey in Expanded Chess


Amazonia. 11x11 board with Pawns that promote to Princesses in the middle of the board.[All Comments] [Add Comment or Rating]
🕸Fergus Duniho wrote on Wed, Aug 4, 2021 01:08 AM UTC:

What's the Flying General in Xiangqi?


💡📝Albert Lee wrote on Wed, Aug 4, 2021 03:17 AM UTC in reply to Fergus Duniho from 01:08 AM:

Hi Fergus,

I have elaborated more on the Flying General move and included Janggi as well in the explanation.


2.Manticore and 2. Griffin ?[Subject Thread] [Add Response]
Jean-Louis Cazaux wrote on Wed, Aug 4, 2021 08:05 AM UTC in reply to Bn Em from 01:08 AM:

In wikipedia Fairy chess pieces they are the Osprey for DthenB and the Ostrich for AthenR


Amazonia. 11x11 board with Pawns that promote to Princesses in the middle of the board.[All Comments] [Add Comment or Rating]
Bn Em wrote on Wed, Aug 4, 2021 12:49 PM UTC:

The Princess' diagram disagrees with the text in omitting sideways moves


💡📝Albert Lee wrote on Thu, Aug 5, 2021 01:33 AM UTC in reply to Bn Em from Wed Aug 4 12:49 PM:

Thanks, I have corrected the Princess' moveset diagram by adding sideways moves.


🕸Fergus Duniho wrote on Thu, Aug 5, 2021 01:48 AM UTC:

Okay, I unhid this page.


Chess vs Strong Makruk. Chess against an enhanced Makruk army in an 8x8 board.[All Comments] [Add Comment or Rating]
🕸Fergus Duniho wrote on Thu, Aug 5, 2021 01:51 AM UTC:

Although this is called Chess vs Strong Makruk, all it describes is Strong Makruk.


2.Manticore and 2. Griffin ?[Subject Thread] [Add Response]
Aurelian Florea wrote on Thu, Aug 5, 2021 09:10 AM UTC in reply to Bn Em from Wed Aug 4 01:08 AM:

@Bn Em I meant a piece that takes the first 2 steps like a rook and then towards outside like a bishop. The osprey jumps as a dabbabah and then moves towards outside like a bishop. So they are not the same piece.


Aurelian Florea wrote on Thu, Aug 5, 2021 09:13 AM UTC in reply to Jean-Louis Cazaux from Wed Aug 4 08:05 AM:

@Jean-louis

Agreed but these are not the pieces I am talking about. I'm saying a piece that starts like a rook for the first 2 steps and then it goes towards outside like a bishop. So this 2. Maticore would be able to stop or be blocked at wazir sqaures.


Apothecary Chess Tournament[Subject Thread] [Add Response]
Aurelian Florea wrote on Thu, Aug 5, 2021 10:32 AM UTC in reply to Aurelian Florea from Tue Aug 3 03:51 AM:

Unfortunately Erik has not logged in since May and I don't know how to contact him. Any ideas?


ChessVA computer program
. Program for playing numerous Chess variants against your PC.[All Comments] [Add Comment or Rating]
Robert Mate wrote on Thu, Aug 5, 2021 01:41 PM UTC in reply to Robert Mate from 12:28 PM:

Silverman and Microchess cvc files. Microchess is playable between humans, but crashes the ChessV engine. Not sure why.

https://www.dropbox.com/sh/8t14o11x6lq5294/AACVwG8aPAtAswr-LUd0EqZDa?dl=0

EDIT: I'm slowly adding small chess variants here.


Robert Mate wrote on Thu, Aug 5, 2021 04:22 PM UTC in reply to Robert Mate from 01:41 PM:

I just noticed a bug. If all I do is start a game, make one move, and then take back the move while the computer is thinking.. it crashes. This happens in 2.2 and the new update.


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