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 Reversi

Reversi (Othello) and variants.


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6. augustus 2004, 21:50:12
KevJon 
Onderwerp: Re:
Rounding sounds the most logical.

Thanks all.

31. augustus 2004, 17:35:05
coan.net 
So what is better to start with - your pieces right next to each other, or diagnal starting position? Is there an advantage/disadvantage to either of these?

I'm normally not a big Reversi player, but with the 10x10 team tournament starting, and the 6x6 comming soon.....

31. augustus 2004, 19:44:26
kitti 
Usually fixed diagonal starting position is used so the parellel starting might be confusing to seasoned reversi veterans :) Other than that its really not an issue. At least not in 8x8 nor in 10x10.

1. september 2004, 20:19:56
Czuch 
Onderwerp: Re:
I think , in 8x8, there is more advantage for white in a non diagnal start.... the common courtesy , to make it a more fair game, is to use diagnal start

20. september 2004, 13:53:32
Rose 
Onderwerp: 2 players needed
Polygonal Alien killers are looking for 2 strong 8x8 reversi players to join the team for the upcoming 8x8 team tourney.. Any one interested please contact Ripley at PAK

22. september 2004, 05:18:17
Stevie 
Onderwerp: 8x8 team tourny
I still need 2 players for this tourny in SCRL fellowship, we have 6 players in the team, but 2 of them cant play :o(

8. november 2004, 21:17:15
Logistello 
Onderwerp: Fantasy Othello
The World Othello Championships are nearly upon us. So why not play Fantasy Othello - full details can be found here

11. januari 2005, 15:03:18
Hrqls 
in my reversi rules it says you have to start diagonally
XO OX
OX XO

but on here you can also start horizontally or vertically

XX OO XO OX
OO XX XO OX

is that allowed ?

11. januari 2005, 23:25:37
Cientos 
Onderwerp: Re:
Hrqls:

Before the game got the name "Othello" it was allowed; also, I think another rule was added with the change of name (about sharing the discs). So, this we play must be another variant.

12. januari 2005, 13:18:40
Hrqls 
*nod* it was also explained to me in the reversi-ep fellowship :)

thanks :)

sorry for moving a bit slower now .. i have a lot to think about in reversi ;)

16. januari 2005, 05:04:17
Orlandu 
Onderwerp: Re:
Hrqls: Most sites give the option to go both ways... Gives it more options to work with than play 100 games the same way...

24. februari 2005, 21:51:48
Hrqls 
Onderwerp: reversi solved ?
are any of the reversi variants on here solved ?

i can understand 6x6 being solved .. but not sure

26. februari 2005, 15:06:42
kitti 
6x6 has been solved. With optimal play player 2 is guaranteed a 19-17 win with parallel opening position and 20-16 with diagonal opening. More info at: http://www.feinst.demon.co.uk/Othello/6x6sol.html

I guess the bigger ones will not be solved ever.

7. maart 2005, 19:36:53
Hrqls 
thanks

8. maart 2005, 14:46:34
515484 
Onderwerp: Using "Othello" programs
I’ve got a question about „Othello“ programs... Are they really so strong as they are called? Do they don’t have a weakness?
I would say I was a experienced player few years ago (but perhaps not so good as most payers here at brainking :) ), but I mostly played against programs in private.
In chess the programs have big problems with positional play and game strategies like in the opening called King’s Gambit. They always say that black has an advantage, but it is not so easy to say.
Can’t it be so in “Othello“ too?

I can’t say that cheating (using programs) is okay or not. But it should be a fair not using these programs. But you can’t control it that everyone isn’t cheating. So a prohibition doesn’t make sense.

I would be happy about every answer.

PS: I’m sorry for my bad English…

9. maart 2005, 16:40:45
Enid 
Onderwerp: Othello programmes?
I didn't even KNOW there was such a thing. Do some players on here use them? Is that why it is so difficult to win a game? Or is it that I am too 'thick' :-)

9. maart 2005, 17:30:26
furbster 
They probably are around, but i would most definatly not use one. I play to get better not to be the best by cheating

9. maart 2005, 22:37:21
kitti 
Onderwerp: Re: Using "Othello" programs
Yes, there are some very strong othello programs. The Moor beat world champion in 1980 and since then programmes have been able to match human world championship level players. In 1997 program called Logistello did beat the current world champion Murakami 6-0 in six matches. Of course using such programs is considered cheating and it is prohibited in BK user agreement.

Surely it is quite hard to know if someone is using such program or if he/she is just a very good player. Personally, i don't even bother thinking about that. If someone chooces to use such tools, they're only fooling themselves. It doesn't take anything away from me as i'm not obsessed with ratings and stats. I still enjoy my games no matter whom i play against.

If you suspect someone is using such programs, try talking to them about the game. There might be something fishy if someone plays like a pro but cannot explain the moves. Also try playing them in 6x6 or 10x10 as programs for those are not quite as strong as the regular 8x8 ones. At least i'm not aware of such programs.

In my opinion, even if you think you have a strong case about someone being a cheat, it is not worth to go public with your accusations. It just causes bad feelings, flamewars and such. And the accusations could be false, it's not a easy task to prove someone cheats. If you think someone does cheat and you're bothered about it, just don't play against him/her anymore.

9. maart 2005, 22:43:54
Czuch 
I thought there was a 6x6 program that gaurantees a win 100% of games, no matter what color?

10. maart 2005, 07:16:33
kitti 
Nope, player to move second (== black at BK) is guarenteed a win on perfect play. However, i haven't heard of program with such capability being publicly available. It took weeks on SGI workstation originally solve the game.

10. maart 2005, 07:27:03
Wil 
Onderwerp: Re:
<>Czuch Chuckers: I thought there was a 6x6 >program that gaurantees a win 100% of games, no >matter what color?
Kitti is right: such a program could not guarantee to win itself ;-)

11. maart 2005, 01:24:24
Czuch 
Onderwerp: Re: Re:
Wil: Yes that makes sense that a win for both sides cannot be gauranteed! Kitti is correct, it is black that has a gauranteed win formula, but both colors cannot have a gauranteed win, my bad, thanks!

25. mei 2005, 13:48:35
Hrqls 
Onderwerp: reversi variation
would it be nice when a player could decide to place a piece of the color of the opponent as well ?

both players are still their initial colors .. but they can play a piece in the other color in their turn.

so for example i am white .. and at my first real move (after the 4 pieces in the center are placed) i move with a black piece turning one of my own (white) pieces to black ... then its blacks turn .. and he (of course) moves with black as well .. to turn my last white piece around to black ... making the while board black ... and black would have won

of course this would be bad of me .. so i wont be playing with my opponents piece at the first real move ... but further in the game it might create some interesting situations ?

25. mei 2005, 13:56:41
Hrqls 
Onderwerp: another reversi variation
Aangepast door Hrqls (25. mei 2005, 14:25:43)
(just translanted the rules to dutch so i started to think about them :))


would it be a nice variation if a player would place 1 piece of a 3rd color .. (grey) which would turn all enclosed pieces into the other color. When the move is completed and the pieces have been turned, then the grey piece changes into the color of the player who made the move.

so it would act as both a white as well as a black piece .. turning the black pieces which it encloses with a white piece on the other side and turning the white pieces with a black piece on the other side as well

25. mei 2005, 16:01:22
John Baker 
Onderwerp: variation
How about randomly placed "wild" pieces? Those grey pieces could be randomly placed at the beginning of the game by the software (just a couple of them). Then, for the rest of the game, either player could use those pieces as their own. They'd never change status, always usable by either player. A grey located diagonal from the corner would definately add a significant aspect to the game. :-)

14. juni 2005, 04:04:13
iytconvert 
I have a question. Do people play like this in tournaments always flipping over their peices? I think it would be a tired affair after turning and turning and turning.

15. juni 2005, 22:38:21
harley 
Onderwerp: Re:
iytconvert: I've thought that too! I've seen a reversi board, and the pieces are double sided, different colour on each side, so I guess they do.

15. juni 2005, 22:47:05
John Baker 
Yeah, that's the way they're sold in stores. However, I would agree that it seems clumsy for live tournament purposes.

16. juni 2005, 03:03:13
Czuch 
Onderwerp: Re:
John Baker: I have never played a live topurney, but I would imagine these days they could play them on touch screen computers or even online but face to face in the same room.

16. juni 2005, 03:12:42
John Baker 
Onderwerp: Re:
Czuch Chuckers: Good point. In fact, it'd be a little spendy, but there could be a touch screen laying flat on the table between the opponents. Even better, it could be flush with the tabletop and look really snazzy! I can see it now... green felt tabletop with black leather around the edges...bright othello screen in the center, black and white pieces on a green board...bright light coming from spotlights in the ceiling...and an announcer. Yes! An announcer! This just keeps getting better and better...

16. juni 2005, 03:15:20
Czuch 
Yes kinda expensive for most, but I am right there with ya, maybe a few showgirls too, and a cocktail waitress?

2. augustus 2005, 17:25:15
John Baker 
Onderwerp: pass moves
I don't think players should have to acknowledge a pass move. It'd speed things up quite a bit if I could just make 8 (or however many) moves in a row without having to wait for my opponent to acknowledge the pass. Some players make 1 move per day, and there's nothing wrong with that, but you can imagine the frustration when it's a tournament game and everyone's waiting for one player to acknowledge the pass moves once a day. I'm not experiencing this right now, but it's happened quite a bit in the past.

2. augustus 2005, 17:30:23
Rose 
Onderwerp: Re: pass moves
John Baker: Auto pass has been brought up numerous times over the past 3 years and so far Filip has stated he has non intention of creating the auto pass funtion for any games.. Sorry

2. augustus 2005, 17:55:18
John Baker 
Onderwerp: Re: pass moves
Rose: Bummer. Thanks though. :-)

2. augustus 2005, 22:16:25
furbster 
Onderwerp: Re: pass moves
Rose: does suck tho, it'd be better with it ::runs::

2. augustus 2005, 22:47:07
Rose 
Onderwerp: Re: pass moves
furbster: lmao Hey I never said I agreed with Filip! I desperately would love to see the auto pass as would tons of other folks. But No means no.. So we do with out.
Worse things in life eh! LOL

17. augustus 2005, 23:16:31
John Baker 
Onderwerp: something to talk about
Anyone have anything to say about reversi? Share a favorite strategy? Ask a question?

22. augustus 2005, 00:36:50
gborland 
Onderwerp: Reversi openings
I need to learn more about Reversi openings. They are my weak point; my first five or six moves are normally pretty random. Any pointers?

22. augustus 2005, 00:50:08
AbigailII 
Onderwerp: Re: Reversi openings
gborland: I need to learn more about Reversi openings. They are my weak point; my first five or six moves are normally pretty random. Any pointers?

I'd try Google

22. augustus 2005, 13:28:22
John Baker 
Onderwerp: Re: Reversi openings
gborland: From what I've picked up, there are two pretty common openings, and the only other possibility is weak and uncommon. I don't know how to explain them here, other than suggesting you look at my games. I wish we could insert images here. :-)

22. augustus 2005, 13:48:13
John Baker 
Onderwerp: Re: Reversi openings
gborland: Because of the way we're allowed to start here on BrainKing, we can get some non-traditional openings. My game http://brainking.com/en/ShowGame?g=994572 is a good example of one of those. I have no suggestions for how to proceed in those situations.
Here are two examples of games where I had both of the more common openings, and they were played out fairly well. In each, the moves become non-standard by about move 5 or 6 (or 9-12, depending on how you're counting).
http://brainking.com/en/ShowGame?g=992113&i=8
http://brainking.com/en/ShowGame?g=992205&i=8

22. augustus 2005, 13:57:46
John Baker 
Onderwerp: Re: Reversi openings
gborland: I don't have any current examples of the other opening, which I called "weak and uncommon," and I don't feel like digging through my archived games. It's the one where you get two parallel lines of 3 pieces.

22. augustus 2005, 15:10:23
gborland 
Onderwerp: Re: Reversi openings
Thanks for the replies. I can't decide if my best option is to just memorize the standard openings, or to play each opening out from first principles. :-)

22. augustus 2005, 15:19:03
John Baker 
Onderwerp: Re: Reversi openings
gborland: IMO, the best thing to do is find something that works well for you most of the time. Once you find that, go back and try to commit to memory what you did and what it accomplished, so that in future games you can accomplish the same thing by using similar, if not the same, moves.

24. augustus 2005, 14:11:27
John Baker 
Onderwerp: game strategies
How about overall game strategies? Some players try to dominate throughout the game, making moves that capture as many as possible every time. Others go for the edge spaces and work at gaining edge territory. Still others, like me, work at getting down to a "powerful few" with which we can control the moves of the opponent. What do you use?

25. augustus 2005, 01:50:53
rod03801 
Personally, John Baker, the strategy you say you use is the most effective. I am not really an expert at regular reversi, however. Anti-reversi is my game.. but the strategy is of course similar.

When learning reversi, I used to try to always take as many as possible through the game.. and lost almost every time! lol. it's all about position, not numbers, through most of the game, in my opinion..

25. september 2005, 17:18:42
BrainKing04 
Onderwerp: Re: game strategies
John Baker: working at getting down to a "powerful few" seems to be the most useful strategy if you feel the need to separate all the strategies, however they must all be considered at the same time to be a good player

26. september 2005, 00:51:17
John Baker 
Onderwerp: Re: game strategies
BrainKing04: I consider myself to be a very good player. I am also a relatively fast player. Why don't you accept my invitations? You asked for a faster time limit, but you still won't accept my invitations. What does it take to play you?

8. oktober 2005, 03:10:36
BrainKing04 
woudl anyone else care for a game?

8. oktober 2005, 03:24:47
rod03801 
Onderwerp: Re:
BrainKing04: if you like 6x6 or anti, sure!

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