"...le jeu de l'harmonie universelle"
Use Cassio to play the game of Othello against the program. Review and analyze games. Browse through the WThor database for instant access to 90000 tournament games. Practice your endgame skills by solving graduated puzzles... Cassio is a powerful, simple, fast othello board for Mac OS X. Like so many world champions, use a Mac to play Othello!
Features of Cassio include:
Cassio is distributed as shareware (15 euros), with its source code available free of charge (source code in Pascal, 3.3MB). Note however that no feature is disabled in Cassio if you don't pay the shareware fee, and that there is *no* painful reminder dialog, either. In that context, shareware means honor : if you like Cassio, please consider paying it.
Cassio is copyrighted work: Copyright (c) 1997-2014, Stéphane Nicolet. All rights reserved. Permission must be obtained for commercial redistribution.
Feedback: Like any author, I enjoy feedback on my work. For any question, suggestion, or problem report, please write an e-mail to firstname.lastname@example.org, or send me a postcard at Stéphane Nicolet, 24 rue Titon, 75011 Paris, France.
Cassio can be downloaded from this server as a self-mounting disk image (.dmg).
|Stable version of Cassio (7.7) in French (for Intel)||Cassio_francais.dmg (175 MB)|
|Stable version of Cassio (7.7) in English (for Intel)||Cassio_english.dmg (175 MB)|
|Stable version of Cassio (7.5) in French (for PowerPC)||Cassio_francais.dmg (154 MB)|
|Stable version of Cassio (7.5) in English (for PowerPC)||Cassio_english.dmg (154 MB)|
Once you have downloaded one of the stable versions above, you may want to experiment with the latest development version, which is available in the directory below, along with the source code. Note that, to reduce bandwidth, only the interface is included in the archives of the development directory (no documentation, no database, no graphics, no engine, etc.), so if you are new to Cassio, you have to download one of the stable releases first.
|Latest development version:||See this directory and the version history.|
|Source code:||Cassio_sources.zip (3.9 MB). In Pascal, C and ObjectiveC, needs Xcode 3.0 and CodeWarrior 8.3 or better|
A mailing list for Cassio users is available. New releases will be announced on this list.
Where does the name "Cassio" come from?
From Shakespeare : while almost everybody remember the names of the three best-known characters of the famous Shakespeare tragedy, Othello (the noble Moor), Desdemona (Othello's beautiful wife) and Iago (the villain), relatively few people seem to be able to name Othello's faithful, naive and, it has to be admitted, slightly stupid lieutenant of the Venetian general: Michael Cassio.
Very very strong. I know what I mean : I've been othello vice world-champion in 1996 and 2007, and the program consistently beats me :-) In fact, Bruno Causse, Richard Delorme and myself have been refining Cassio's othello engine for more than 15 years now, using the best artificial intelligence techniques known to us. The program has won several tournaments (both human vs. computer and computer vs. computer tournaments), and is competitive with the top programs running on PC and UNIX platforms.
Where does the name "Cassio" come from?
Hasn't Othello been solved?
Short answer : No.
Long answer : It is true that the best programs now surpass the very best humans, but nobody has solved Othello in the mathematical sense yet. This strength doesn't prevent humans beings from enjoying playing the game, including in competitive play (National championships, World Championships, etc.) In that respect, the situation for Othello is similar to Chess, where the best programs beat 99.99% of competition players. If you want to know more about Othello, please find and visit the site of your local Othello association! A good starting point is the web site of the French Federation of Othello.
How can I pay the shareware fee?
Cassio is distributed as 15 euros shareware, with its source code available free of charge. If you like and use Cassio, please consider paying for it. The easiest way to pay for Cassio is by postal mail : just send me a postcard or a small written word, with 15 euros in the envelop, at the following address : Stéphane Nicolet, 24 rue Titon, 75011 Paris, FRANCE. Thanks!
Does or will Cassio run on Mac OS X, 9, 8 ... ? On PowerPC and Intel processors?
Yes, Cassio is a so-called Carbon application, and should run fine from System 8.6 upwards, but it is optimized for Mac OS X and Intel processors. For the time being, a PowerPC compile of the lastest vesrion of Cassio is still available, of course. Older versions, running on systems as old as System 7, can be found in this directory (try the "old_Cassio" files).