Author: Bruce Moreland
Date: 08:53:52 06/28/98
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On June 28, 1998 at 01:57:27, Mark Young wrote: >I would agree. Player A can not get "!" until play B does "?" first. Thinking >about what you and Bob wrote. I wonder just how much more can the programmers >get out of just software improvments. Have we got about all there is to get from >improving ones program. How much more can chess programs improve from just >software? Informant defines "!" as being "a very good move". Others have defined this symbol as meaing "best", but that is obviously not a complete definition. A "!" does not have to change the game-theoretical result. It is possible and common to get a "!" when playing the losing side of a lost position that remains lost. This is a strange discussion, I don't know what Don is trying to show, but I think he is wrong that you can't find a tactic unless you are already won. In one sense this is by definiition, since if you find a winning move, then you had a winning position. If what Don is suggesting is that there is always more than one path to victory, this is false. If Don is suggesting that a tactical shot *always* springs from positional advantage, this is also false, unless you want to say that the any position containing a winning shot is positionally advantageous, in which case there is no discussion here since we're back to definitions again. If Don means that when you find a tactical shot, you often have laid the groundwork (intentionally or unintentionally) by out-playing your opponent positionally, then this sounds true to me. It's an old maxim in chess that tactics tend to flow from positional superiority. bruce
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