Author: Vasik Rajlich
Date: 02:39:08 12/08/05
Hello, I appreciate the great feedback from the testers. Rybka played over 5,000 games in my testing, but under very limited conditions, and many new things have popped up after the Beta release. Here is a list of major known problems with comments: 1) Mating problems - essentially fixed (in full release). Rybka still won't always play the very fastest mate but will be _much_ more efficient. A really full solution requires even hash table changes and will be available as a patch to the first release. 2) Displaying mate lengths - will be available as a patch to the first release. 3) Displaying mate variations in analysis mode - fixed. 4) Displaying multiple variations in analysis mode - fixed. 5) 50 move repetition problems - fixed. 6) Support for full UCI protocol - fixed. 7) Underpromotions - will be fixed as a post-release patch. 8) Crashing & hanging problems - some fixed, some being fixed. Obviously the highest priority at this point. 9) EGTB support - added. 10) Endgame knowledge - this is for Rybka 2.0. It should not be hard in principle, in fact I expect it to be easier than middlegame knowledge. There just wasn't time. I do apologize to the endgame lovers out there :) 11) NPS - please don't worry about this number. Rybka uses the same CPU cycles as everyone else. Search is a very weird and complicated thing, every engine is searching 99.9% nonsense anyway. Again, I appreciate all of the great feedback and look forward to being ready with a stable 1.0 in a few days. Best regards, Vas
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