Author: Robert Sherman
Date: 09:37:35 11/09/97
This post is not meant to demean Rebel 9 in any way. Rebel 9 is, in my opinion, a very strong program with many nice features that makes it a significant upgrade over Rebel 8. Although Rebel 8 and Rebel 9 are very strong, I have uncovered a glitch in respect to the amount of time the programs spend on taking the piece on certain sacrifices. The following game was played on a "obsolete Pentium 100", so it may not be applicable to the faster machines. I did send this game to Ed Schroder when he was producing Rebel 9. On a fixed level Rebel 9, does see the impending mate 15 seconds later then it does when playing at a 40/2 tournament level. This may mean that Mr. Schroder was testing Rebel 9 on faster machines and didn't believe that the need to make changes to the way Rebel 9 allocates time would make any sense. My belief is that when a sacrifice is played, the program should realize that move is very critical for the game and spend a long time analyzing whether the sac is sound or not. Anyway, on the fixed time level, Rebel 9 finds a refutation the second fastest of programs I have tested, second only to Genius. Also, shareware programs never reject taking the knight bait while taking deep searches. While all commercial programs find the looming mate (except Rebel because of the timing glitch) and make the appropriate move. So this game seems to separate the "men from the boys." I have not tested this game on Crafty or some commercial programs (Hiarcs 6, CSTal, Shredder), so I would be interested to see how they do. Without further ado, here is the game: (Sorry I didn't have time to put it in PGN) White : Robert Sherman Black: Rebel 9 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nc6 5. Nd5 Nxe4 6. d3 Nxf2 7. Qe2 Nxh1 8. Ng5 O-O 9. Nxc7 Qxc7 10. Qh5 h6 11. Bxf7 Kh8 12. Qg6 Qa5 13. c3 Qxc3 14. bc Bf2 15. Kd1 Ne7 16. Qh7#
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