WBaduk (World Baduk) is one of the major Korean Baduk servers. Formerly it was known as CyberOro. The servers' clientele reside primarily in Korea, Japan, China, Taiwan and Thailand. WBaduk has Windows clients with an English interface. WBaduk uses the NGF file format to store games.
If you are unable to log on to WBaduk, check the WBaduk Status page.
Newcomers should investigate WBaduk Getting Started.
New accounts can be registered free of charge on the English page.
The English client is designed for Windows. Until 2011 there was no native client for Unix systems (MacOS X or Linux), it was however possible to play in a Windows emulation.
On October 18th, 2011 WBaduk started a Java playing room, which is limited to playing and watching matches, but doesn't have the tsumego collection, betting options and teaching functionality of the original client. ( link)
Now there is WBaduk HD client for iPad, available for free in AppStore?
There is free Android client also called WBaduk, available at Google Play.
How to use WBaduk on mobile phone, instructions in Russian: http://10kyu.ru/posts/mobilnyiy-klient-wbaduk/
Interesting Cyberoro features not found elsewhere (to my knowledge):
- In even games, colours are chosen by Nigiri which is performed by the players as in a real game. You can choose even or odd, but I don't see where you can choose the number of stones
- Score estimate also give a thickness estimate. Amazingly, you can use this score estimate during the game. This is an option which can be turned off before the game during the game negotiation.
- There is a pre-play feature that allows you to edit the current board when viewing a game or playing (unless it is turned off). This works in conjunction with the estimate feature (helpful for fixing complicated board positions the score estimation system gets wrong).
- Before the game, you can negotiate whether the undo option, score estimation, or pre-play feature should be turned on.
- The client features a fairly large set of Tsumego.
Other good features:
- You can challenge people, like on IGS, or you can post a game request, like on KGS.
- Byo-yomi is counted down on the last stone played, like on Dashn.
- Escapers lose after being disconnected for 5 minutes.
- Special rules can allow some odd variations in the gameplay.
- Unlike KGS or IGS, pair-go is quite active there and it's a great way for players of different level to come along together.
Features that seem to be lacking:
- You can't list the players by country, like on Dashn. In the player lists, players are identified for most major countries by little flags (default is UN flag), or by name in chat.
- No triple ko handling.
- Some opponents will try to cheat their way out of a loss, by marking dead groups alive shortly before or while you are pressing the "Done" button to confirm the score. The server does not resolve scoring conflicts properly. The confirmation window will show the correct score and ask you to confirm, but when you do and your opponent cheated the server will report wrong score as the final result.