Author: Tord Romstad
Date: 14:31:18 09/17/03
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On September 17, 2003 at 12:56:51, Drexel,Michael wrote: >On September 17, 2003 at 12:26:09, Uri Blass wrote: > >>Junior7(A1000) needs less than 1 second for 15...Nf3+(only 114 knodes) > >Sorry, Junior 7 is out of the competition. >This program sacrifices knights on f3 just in order to weaken the white King >position. If it has anything for the piece or not is not important. Do you really think so? I think precisely the opposite. It is much more impressive and interesting when an engine plays a correct sacrifice long before it sees a clear win than how fast an engine can calculate a precise score and the right PV. A true sacrifice tells you something about the engine's understanding and knowledge about the game of chess, while the time it needs to find a combination just tells you something about its speed of calculation and its search extensions. The King has always been among my favorite chess programs, but in this particular position I am much more impressed by Junior (which I don't know at all). That a program is able to find the move Nf3+ long before it sees a concrete win, and still avoids making unsound sacs in too many other positions (I assume that Junior doesn't make unsound sacs very often, as it is clearly one of the strongest programs available) is truely remarkable. I can accept that you don't give my engine credit for solving the problem quickly. My engine is very weak, and while it finds this and many other sacrifical combinations very quickly, it also frequently makes unsound sacrifices. But I think you are really unfair when you claim that Junior is "out of the competition". >The score is not convincing either. Who cares? Computer chess enthusiasts are too occupied with numbers (ratings or evaluations). It is more important how fast an engine finds the right move than how it evaluates the position. Tord
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