Author: Brian Katz
Date: 04:06:28 12/27/03
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On December 25, 2003 at 08:58:39, Francois Bertin wrote: >On December 25, 2003 at 00:24:37, Brian Katz wrote: > >(snip) >> >>Always by the way keep spare copies of engines and put them away for safe >>keeping.......Floppy, CD, DVD, Zip File or some other folder on your harddrive. >>You may want to use it again. Such is the case with the 8.0.0.8 and 8.0.0.23 >>engine. Many are not happy with 8.0.0.23. >> >>Happy Holidays >>Brian > >Hi, > >I've heard about the 8.0.0.8 version versus the 8.0.0.23 version controversy, >but never read anything about what's precisely the problem with the newer one. >Why do many people don't like it? > >Happy Christmas! > >FB Many seem to think that 8.0.0.8 is stronger than 8.0.0.23. Also, there is a wierd bug in 8.0.0.23 which prevents black from capturing on e4 with the Knight in some positions, as I will give below. A position where 8.0.0.8 and almost any other chess engine will take the pawn on e4. I do not know if this only applies to knight captures on e4. Here is the position. If you have both engines 8008 and 80023, you can witness this by trying each engine separately. Meaning that you cannot have both in the engine folder at the same time. You can, but it will only recognize one of them only. So you use one, then remove it, and then place a copy of the other one in the engine folder. Easier yet would be to make a few separate folders. One for a copy of 8.0.0.8 with let's say the name Engines 8.0.0.8 and another for 8.0.0.23 with the name Engines 8.0.0.23. What I would then do is rename your Engine folder to let's say AEngine. You cannot of course have more than one folder with the identical name. So, after you rename the Engines folder as just mentioned, you simply rename the Engines 8.0.0.8 folder to Engines by simply removing the 8.0.0.8 part of the name. This makes it quite easy to switch back and forth. You can then rename the new Engines folder which only has the 8.0.0.8 engine in it back to Engines 8.0.0.8 and then do the same with the Engines 8.0.0.23. Remove the 8.0.0.23 part of the name and you again have the Engines folder only with the 80023 engine in it. You may have to close out of Fritz each time you do this. It may keep the present engine in RAM and not acknowledge the change with the same name engine. Since all the versions show in the engines window as just Fritz 8. The position (and there are others as well, that many have posted)is down below. Interesting here is that 8.0.0.23 will not take the pawn on e4 with the knight, however, if you place the f3 Knight on g1 in this position, then the black knight will capture the pawn on e4. Fritz 8.0.0.8 and almost all, if not all engines will take this pawn on e4. You can of course check the engine version by Right clicking on the particular engine file>Properties>Version Tab. You will see the Version number. [D]rnbqkb1r/pp1ppppp/2p2n2/8/2B1P3/P7/1PPP1PPP/RNBQK1NR b Best Brian Happy Holidays
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