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This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2010-08-26
 By Daniil  Frolov. Pentagonal chess. Missing description (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
Fergus Duniho wrote on 2017-06-19 UTC

I tweaked some values and got this. Since two ranks are 145 pixels tall, I made sure the y values for nextrank added up to 145. Ben had used values of 80 and 60, which added up to 140. This could be improved on further by drawing the board with greater precision.

Ben Reiniger wrote on 2017-06-19 UTC

Here's a first try at a graphical board:

I edited Graeme's image from a comment in Aug. 2010 to be in the shape of your board.  I didn't work very long to make it look nice, then uploaded it into the appropriate directory.   The values in NextRank (attempt to) align the piece positions with the pentagons.  In GameCourier, using CSS layout actually makes everything line up correctly, but using image layouts (which is forced in the DiagramDesigner) tries to tile the background image and/or doesn't space the pieces correctly.   Per the Developer Guide, 

Your choice of background image affects the width and height of spaces. These are normally determined by which piece set you choose, but when you choose a background image, its values for width and height override other values. If you upload any new images to the backgrounds/ directory, you should contact me (Fergus Duniho) if its cell dimensions are not the default of 50 pixels by 50 pixels or if two asymmetrical images need to be paired together. 

Fergus Duniho wrote on 2017-06-19 UTC

I believe the problem is with Codemirror, which I have configured CKEditor to use in Source mode. I did not find any Codemirror option that would stop it from collapsing leading spaces. So, when editing pages with ASCII diagrams, I would recommend turning off JavaScript.

Fergus Duniho wrote on 2017-06-19 UTC

I restored the diagrams, but I had to turn off JavaScript to do it. Apparently, even Source mode in CKEditor will collapse whitespace at the beginning of a line, which makes it hard to edit ASCII diagrams with it. I'll look into whether there is a way to stop this behavior. Until then, I would advise not editing this page without turning off JavaScript first.

Fergus Duniho wrote on 2017-06-19 UTC

Since I recently moved the site, I had a backup of the database lying in my /root directory. So I copied this to a database called cvp_backup and made it read-only. I can now use this to restore the diagrams on your page.

Fergus Duniho wrote on 2017-06-19 UTC

When your page includes ASCII diagrams, never put the editor in WYSIWYG mode. That will mess things up for you big time. Stick to Source mode, and your code will remain unchanged. An ASCII diagram should be enclosed in PRE tags, not in a FONT tag. You also don't need any BR tags in an ASCII diagram, and it looks like WYSIWYG mode added them in. So, what you want to do is to replace your FONT tags with PRE tags, and get rid of all the BR tags in your ASCII diagram. I did this for the one in your setup, but since I don't know how it originally looked, I don't know if I got it right.

Although the Diagram Designer can be used for most boards, it cannot automatically draw pentagonal boards. So you're on your own there unless you can get someone else to draw them for you.

Daniil Frolov wrote on 2017-06-19 UTC

Oh my god, I came here to fix some minor grammatical mistakes, but after the fix, diagramms went dizzy, and even Courier New font didn't help. Please, coukd somebody help me with it?


Yeah, maybe the old default format were not quite aesthetical, but it were perfect to make textual diagrams...


(Also, maybe, it's an audacity, but I also would be glad if somebody would help me to make praphical diagrams. Of course, I'm not forcing anybody to do it, but if somebody would will, I would be deeply thankful, for I think it's the most important of my chess variants.)

Charles Gilman wrote on 2010-09-01 UTC
My goodness, the tesselation in the last comment is the one that I'm using (though with some extra cells and rather more missing to give a more 'face-to-face' look). Well I've started writing a page of hex variants and I've got a cubic one planned for after that, so perhaps I'd better fast-track my 50-pentagon variant to next after that one.

The page where I mix square and hex cells is called, straightforwardly enough, Square versus Hex.

Graeme Neatham wrote on 2010-08-31 UTC

Another board of pentagons that might be of interest is this:

And why the colours? I just think it looks nicer when presenting a board
with no game context.
Of course if the board were to be used in a variant, the number of colours
and their placing might need more careful consideration.

Daniil Frolov wrote on 2010-08-31 UTC
Pentagons works like half-squares half-hexagons. They can be used in some game with both squares and hexagons between squares and hexagons (Charles Gilman have game with both rectangular and hexagonal cells, but i don't remember it's name).

Daniil Frolov wrote on 2010-08-30 UTC
Thanks for good comments.
Graeme Neatham, thanks, i was thinking of both these boards. First is interesting, here lance will not be bound to one of extreme files if moves within it. Second is also interesting, but piece movent here will be assymmetrical, but it don't make it worse. Shogi pawns will not be able to change file, but it don't have clear sidewas moves.
And why boards on your diagrams are colored in this way (i was not thinking about board coloring as my bishops are unbound here)?

Joe Joyce wrote on 2010-08-30 UTC
Charles, I would post it now with a comment in the introduction that it is intended to be an entry in the 50 square contest. That way you've covered all bases. Just remember to put the game in when the contest rolls around.

Charles Gilman wrote on 2010-08-30 UTC
I devised a variant on a board of 50 pentagons which took a different approach from this one, but have yet to post it as I was waiting for the 50-cell contest. Do people think I should go ahead and post it soon regardless of contests, or is there any chance of the contests continuing?

Graeme Neatham wrote on 2010-08-29 UTCGood ★★★★
The concept of using forward/backward irregular pentagons to construct a playing board is excellent. Rather than using a single off-set direction I would be inclined to switch the off-set direction to produce a playing board like this -

It might also be interesting to have left/right pentagons, like this -

David Cannon wrote on 2010-08-29 UTCGood ★★★★
This is a good concept. The only other pentagonal variant I know of is one produced by Graeme Neatham, so this is a barely explored field. There are a number of pentagonal tesalations that tile the plane, all of which offer possibilities for unusual piece movements. Thank you for submitting this game.

Daniil Frolov wrote on 2010-08-27 UTC
Link leads to Glinsky hexagonal chess because it have example of hexagonal bishop's move, in some other hex variants bishop moves differently.

Charles Gilman wrote on 2010-08-26 UTC
The link to Hexagonal Chess does not work because of the colon. In any case, a better link to generic Hex variants would be:

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