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 Post subject: New game: Stigmergy
Post #1 Posted: Sun Mar 07, 2021 9:21 pm 
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Quasi-randomly generated Stigmergy game.

Stigmergy is a drawless territory game for two players: Black and White. It is played on the spaces (cells) of an initially empty hexagonal grid of hexagons. Each player must have access to a sufficient number of stones of their own color.

Definitions

Two stones, or a stone and an empty cell, see each other if they lie on the same straight line of adjacent cells and there are no other stones between them along that line.

You control a cell if the number of stones of your color it sees is more than half the number of cells (empty or occupied) adjacent to it.

To flip a stone is to replace it with a stone of the opposite color.

Play

Black plays first, then turns alternate. On your turn, perform exactly one of the following actions:

  • Pass, provided that there are no empty cells or every empty cell is controlled by some player.
  • Place a stone of your color on an empty cell not controlled by your opponent.
  • Flip an enemy stone on a cell you control.

The game ends when both players pass in succession. The player with the higher score in the final position wins. Your score is the number of stones of your color on the board, plus the number of empty cells you control, plus a komi in the case of White.

Komi

The komi is the even number of points which is added to White's score at the end of the game as a compensation for playing second. Before the game starts, the first player chooses the value of komi, and then the second player chooses sides. Alternatively, experienced players may agree on a standard value for all games.

Notes

Stigmergy can be played online, turn-based, at MindSports.

Stigmergy is a joint invention of Steven Metzger and myself, Luis Bolaños. It is based on Mike Zapawa's Tumbleweed.

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Last edited by luigi on Wed Jun 30, 2021 10:19 pm, edited 1 time in total.

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 Post subject: Re: New game: Stigmergy
Post #2 Posted: Mon Mar 08, 2021 2:35 am 
Oza
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luigi wrote:
...

Definitions

Two cells see each other if they lie on the same straight line of adjacent cells and there are no stones between them along that line.

You control a cell if the number of stones of your color it sees is more than half the number of cells (empty or occupied) adjacent to it.

To flip a stone is to replace it with a stone of the opposite color.

Play

On your turn, either place a stone of your color on an empty cell not controlled by your opponent or flip an enemy stone on a cell you control.
...

In your simulation some stones flip when only one stone of the other color "sees" them. Is this an error in you simulation or in the rules as they are written above?

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 Post subject: Re: New game: Stigmergy
Post #3 Posted: Wed Mar 10, 2021 12:17 pm 
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ez4u wrote:
In your simulation some stones flip when only one stone of the other color "sees" them. Is this an error in you simulation or in the rules as they are written above?

If that is true, it's an error in the simulation. Can you point out one of those flips? The script I used seems correct.

Maybe you wrongly interpreted "sees" as meaning "is adjacent to"?

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 Post subject: Re: New game: Stigmergy
Post #4 Posted: Wed Mar 10, 2021 6:11 pm 
Oza
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luigi wrote:
ez4u wrote:
In your simulation some stones flip when only one stone of the other color "sees" them. Is this an error in you simulation or in the rules as they are written above?

If that is true, it's an error in the simulation. Can you point out one of those flips? The script I used seems correct.

Maybe you wrongly interpreted "sees" as meaning "is adjacent to"?

You are correct that I misunderstood "sees". I did not realize the stones "see" at a distance as well. That does change things. Tracking what sees what all across the board seems quite challenging.

My immediate reaction is that your 12-cell hexagon may be too large (at least for humans!).

However, I also think it would be interesting to train a zero-bot to play this game. My reasoning is that we (at least those of us seeing it for the first time) have no preconceptions of what superior play would look like. It might then be very interesting to observe what sort of play bots would come up with.

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 Post subject: Re: New game: Stigmergy
Post #5 Posted: Thu Mar 11, 2021 8:11 am 
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ez4u wrote:
However, I also think it would be interesting to train a zero-bot to play this game. My reasoning is that we (at least those of us seeing it for the first time) have no preconceptions of what superior play would look like. It might then be very interesting to observe what sort of play bots would come up with.

Yes, I would love to see that. If you know someone that might be willing to do it, please let me know!

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 Post subject: Re: New game: Stigmergy
Post #6 Posted: Wed Jun 30, 2021 10:36 pm 
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Stigmergy can now be played online, turn-based, at MindSports. Here's one of my ongoing games:


Attachments:
Stigmergy.png
Stigmergy.png [ 44.46 KiB | Viewed 3002 times ]

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 Post subject: Re: New game: Stigmergy
Post #7 Posted: Fri Jul 16, 2021 1:46 am 
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I only just checked this out after trying to generalise Lentear rules to any regular polygon, I now realise you had this here already. A nice coincidence as it seems really neat!

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 Post subject: Re: New game: Stigmergy
Post #8 Posted: Sat Jul 17, 2021 5:28 am 
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ElomKW wrote:
I only just checked this out after trying to generalise Lentear rules to any regular polygon, I now realise you had this here already. A nice coincidence as it seems really neat!

Thanks! What is Lentear?

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 Post subject: Re: New game: Stigmergy
Post #9 Posted: Sun Jul 18, 2021 4:49 am 
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luigi wrote:
ElomKW wrote:
I only just checked this out after trying to generalise Lentear rules to any regular polygon, I now realise you had this here already. A nice coincidence as it seems really neat!

Thanks! What is Lentear?


It's a new ruleset for go I made the name Lentear is based on a similar idea to that of the discussion from this thread. Igo in english would be pebbles. Weiqi the Surrounding Game, or enspirit, baduk sounds like onomatopoeia.

Essentially, it's similar to other rulesets with chinese rules but looks even more on the outside like territory rules. For example, instead of pass stones, allowing self-capture is a lot more a amicable to the Japanese rules than the concept of pass stones, I think. Except rulesets disagree on whether to allow suicide or not so I specifically made a compromise. I consciously compromise between different rulesets even before knowing about the politics. Lentear rulesets, a universal ruleset for go, are a precursor to the univsersal ruleset for Shogi, Chess, Xiangqi, and most forms of draughts/checkers including mancala/awale, to the degree that it's even possible two different players to compete against each other in a combined engagement. This would make it more likely for mindsports to be accepted in the olympics, (or create sister Spring and Autumn Olympics which might in the future become more dominant) which is my main goal.

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 Post subject: Re: New game: Stigmergy
Post #10 Posted: Thu Jul 29, 2021 2:36 am 
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(After seeing the linked game) it feels the best way to blend Reversi and Go . . . Will Stigmergy be in the next Mindsports Olympiad (or become one of Mindsports rated games)?

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 Post subject: Re: New game: Stigmergy
Post #11 Posted: Fri Jul 30, 2021 11:27 am 
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ElomKW wrote:
(After seeing the linked game) it feels the best way to blend Reversi and Go . . . Will Stigmergy be in the next Mindsports Olympiad (or become one of Mindsports rated games)?

I wish I could say yes, but I can't see the future. :)

In the mean time, one of my other games, Veletas, is in this year's Mind Sports Olympiad, in case you're interested.

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