Author: Dave Gomboc
Date: 20:28:45 05/23/99
Go up one level in this thread
On May 23, 1999 at 23:13:59, Mark Young wrote: >On May 23, 1999 at 22:44:04, Roger D Davis wrote: > >>It's only one game, certainly, but it doesn't really look like Rebel had much >>understanding of the game from the time it left book (other's appraisals, not >>mine), and Rebel's lose supports the argument that the micros have their own >>weaknesses, and aren't yet a real match for GM players. >> >>So where does that leave previous opinions about a DB board for the desktop? >>We'll have to see what the next months of Rebel-GM games hold, but the market >>for a DB chip is starting to look better and better. >> >>If Rebel consistently loses to the GMs, doesn't this just set the market up for >>the entry of Hsu? >> >>Roger > > >This question must be answerd first: Does the new prototype Rebel 10.5 represent >the current state of the art? Rebel 10.5 is untested, Rebel 10.5 has not shown >itself to be in the very top class of programs as CM 6000 and Fritz 5.32 and >Hiarcs 7. It is clear that Rebel 10.5 had problems (26. f4???)....but the other >top programs have no problem understand the positions in (Ed's key moves shown >below). > > >17. e3? >Blocking its pieces to go the king-side. After this move Ne3, Rg3 (h3) are no >longer possible. 17.e3 was a last minute decision of Rebel10.5 it had 17.Qd3 >all the time. Black answers with 17..f5 and now black is the boss on the king- >side. > >*Hiarcs7 plays the correct 17. Qd3* We'll have to see what Ed can come up with regarding Rebel's last-minute switch to e3. In general, I don't think that this game provides significant evidence that Hiarcs is dramatically better than Rebel. In any case, it would be foolhardy to make such a conclusion from one game. >21.Ra5 exd4 22.Rb5 >Going for the pawn, nice manoeuvre but definitely wrong. Rebel's score dropped >from 0.7 to 0.3 (or so) when it saw the danger of Qe2 but that was to few togive >up the hunt for the pawn. > >*Hiarcs7 plays this, but so far has shown that after 22.. Qd8 23. Rxb4! wins. >Not 23. exd4?! as played by Rebel* This is inaccurate. No win has been demonstrated whatsoever. Autoplaying from a position doesn't prove squat. I currently think that White is not only alive and well after Rxb4, but probably even better. However, "white is winning" is another matter entirely. >24.Rxe8?? >The main positional mistake in my opinion. After this move Rebel is definitely >lost in all variations. It gives away the crucial e-line. IMO Rebel should have >played 24.Qd1 > >*Hiarcs7 plays the Ed's correct move 24. Qd1, but I have seen no line that shows >24. Rxe8?? is losing.* Qd1 and Rxe8 lead to roughly (or exactly) the same position, don't they? >26.f4? >I don't now why Rebel10.5 played this move. It's just a matter of search depth >to see this move is losing material on short term. Rebel10.5 needs 12 plies >to see the loss and then changes to 26.Bg2 (the good move). I tested the >current REBEL-CP on this position and nowhere in the log I see the uglyf4? > >*Hiarcs7 plays the correct 26. Bg2!!, and no line shown so far has been able to >prove a win for Black after the correct 26. Bg2* Dave
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