Stockfish clones in the AppStore: it's becoming a plague...

Discussion of anything and everything relating to chess playing software and machines.

Moderators: hgm, Dann Corbit, Harvey Williamson

Forum rules
This textbox is used to restore diagrams posted with the [d] tag before the upgrade.
jdart
Posts: 4115
Joined: Fri Mar 10, 2006 4:23 am
Location: http://www.arasanchess.org

Re: Stockfish clones in the AppStore: it's becoming a plague

Post by jdart » Sun Mar 18, 2012 2:55 pm

Steve Maughan wrote:Hi Jon,

If a GPL App Store app provide a link to the source in the About screen would that satisfy the license?
No, according to FSF: http://mailman.videolan.org/pipermail/v ... 77486.html

User avatar
Steve Maughan
Posts: 1081
Joined: Wed Mar 08, 2006 7:28 pm
Location: Florida, USA
Contact:

Re: Stockfish clones in the AppStore: it's becoming a plague

Post by Steve Maughan » Sun Mar 18, 2012 3:08 pm

Hi Jon,

Thank for the clarification.

If the Apps are not in compliance with the GPL agreement then that changes everything.

Does Apple acknowledge that all GPL apps sold by others in the App Store (i.e. not their authors) are in violation of the GPL? I would have thought that Apple must bear some of the responsibility for the violation.

Best regards,

Steve

jdart
Posts: 4115
Joined: Fri Mar 10, 2006 4:23 am
Location: http://www.arasanchess.org

Re: Stockfish clones in the AppStore: it's becoming a plague

Post by jdart » Sun Mar 18, 2012 3:30 pm

Steve Maughan wrote: Does Apple acknowledge that all GPL apps sold by others in the App Store (i.e. not their authors) are in violation of the GPL?
I believe they do .. the remarks from FSF were in the context of a video player app that included GPL software and Apple removed it.

bretti
Posts: 33
Joined: Sat Mar 12, 2011 11:03 am

Apps with Stockfish engine

Post by bretti » Sat Jul 28, 2012 10:55 am

A new app with a Stockfish engine (and own GUI) is

Majestic Chess Pro
http://itunes.apple.com/us/app/id542306493
You cannot see variations or valuations in normal game play against the app.
In analyze mode you see only the first line of stockfish above the board - but here it covers the board - ugly!

I thought it could be a port of the wchess-engine from kittinger (remember Majestic Chess for PC and Pocket PC) but it is stockfish...

Don´t pay for it, the original Stockfish is better!
Last edited by bretti on Sat Jul 28, 2012 11:01 am, edited 1 time in total.

User avatar
JuLieN
Posts: 2948
Joined: Mon May 05, 2008 10:16 am
Location: Nantes (France)
Contact:

Re: Apps with Stockfish engine

Post by JuLieN » Sat Jul 28, 2012 11:01 am

bretti wrote:A new app with a Stockfish engine is

Majestic Chess Pro
http://itunes.apple.com/us/app/id542306493
You cannot see variations or valuations in normal game play against the app.
In analyze mode you see only the first line of stockfish above the board - but here it covers the board - ugly!

Don´t buy!
I've stopped counting them: half of the "new" chess Apps are Stockfish's sources severed of their original credits and badly recompiled by crooks from Thailand. Many are deffective and obviously untested by guys who can't even play chess. A few weeks ago I even saw one of those clones for sale at $29.99...

:/
"The only good bug is a dead bug." (Don Dailey)
Image [Blog: http://tinyurl.com/predateur ] [Facebook: http://tinyurl.com/fbpredateur ] [MacEngines: http://tinyurl.com/macengines ]

bretti
Posts: 33
Joined: Sat Mar 12, 2011 11:03 am

Re: Apps with Stockfish engine

Post by bretti » Sat Jul 28, 2012 11:06 am

Yes, I have seen that very expensive app as well but here you can´t see it at the app store because Majestic Chess has it´s own GUI and graphic - not that bad but Stockfish is even better so there is no reason to buy this app.

mephisto
Posts: 388
Joined: Mon Apr 03, 2006 8:10 am
Location: England

Re: Stockfish clones in the AppStore: it's becoming a plague

Post by mephisto » Wed Sep 05, 2012 7:03 am

Three new clones released today exactly all the same but under three different names,
Chess Hero
X Chess Pro
Chess Mania Pro
All three cost £5.49
What's my next move? - to the fridge for another beer !!

User avatar
jshriver
Posts: 1284
Joined: Wed Mar 08, 2006 8:41 pm
Location: Morgantown, WV, USA
Contact:

Re: Stockfish clones in the AppStore: it's becoming a plague

Post by jshriver » Thu Sep 06, 2012 2:42 am

mar wrote:These "authors" are violating GPL IMO as I can't find sources anywhere.
Martin
Guess it depends on how it interfaces with the engine. If the engine is separate then they can charge and keep their GUI closed source, just think of the Fritz interface for example. It's commercial but can call 3rd party engines via UCI/xboard.

If the app has the engine code hard coded into it, then agree it's a violation.
It's always been a tricky question.

When in doubt I look at it like this:

* Is the OS code completely separate? Then you're fine
* Does your code link to a library or code statically (this including it in your executable). Violation
* Doe you link dynamically and include the OS code as a .dll, .so, etc. Then you're fine.

Things may have changed and also depends on the individual license, I was going by GPLv2.

yanquis1972
Posts: 1766
Joined: Tue Jun 02, 2009 10:14 pm

Re: Stockfish clones in the AppStore: it's becoming a plague

Post by yanquis1972 » Thu Sep 06, 2012 5:43 pm

mephisto wrote:Three new clones released today exactly all the same but under three different names,
Chess Hero
X Chess Pro
Chess Mania Pro
All three cost £5.49
unbelievable :roll:

if you can catch that instantly, how is it apple, who i thought was considered OVER-intensive in their regulation of what can pass at their appstore, completely missed it? shouldn't it have been caught automatically even, for someone to examine?

tords always come across as a really chill guy but he has to be upset at the idea of people getting scammed for something he wants to give away for free.

User avatar
JuLieN
Posts: 2948
Joined: Mon May 05, 2008 10:16 am
Location: Nantes (France)
Contact:

Re: Stockfish clones in the AppStore: it's becoming a plague

Post by JuLieN » Tue Sep 25, 2012 6:42 am

Wanna pay $19.99 for yet another clone of the otherwise free Stockfish? Then Chess 4 Chess by Nga Tran Thi Thuy is for you:

http://itunes.apple.com/us/app/chess-4- ... 82591?mt=8

Image

This one has something original though:
Rated 12+ for the following:
Infrequent/Mild Mature/Suggestive Themes
Infrequent/Mild Sexual Content or Nudity
Infrequent/Mild Horror/Fear Themes
Infrequent/Mild Profanity or Crude Humor
Infrequent/Mild Cartoon or Fantasy Violence
Infrequent/Mild Alcohol, Tobacco, or Drug Use or References
Infrequent/Mild Simulated Gambling
Infrequent/Mild Realistic Violence
:lol: :lol: :lol:

Seriously, if those $20 burn your pockets you'd better send them my way and get the original Stockfish instead. ;)
"The only good bug is a dead bug." (Don Dailey)
Image [Blog: http://tinyurl.com/predateur ] [Facebook: http://tinyurl.com/fbpredateur ] [MacEngines: http://tinyurl.com/macengines ]

Post Reply