Rebel 9 FAQ
3. Using Rebel
Rebel 9 has a lot of features. We strongly recommend the reading of the "50 Examples" tutorial, before any further investigations.
Click the big REBEL button with your mouse or press ALT+M.
This is one of the most often asked questions. To make it short:
Rebel doesn't support any kind of printing
So how can we live with this statement ?
The actual loaded games can be saved in two different ways into a text file:
The ELO playing level (menu "OPT/ELO-rating ...") can be used, to scale down the Rebel playing strength to your own playing level. You must be aware, that the ELO values are no absolute values, but representing a relative playing strength. I.e. you have to experiment, to find the right Rebel ELO value for your playing strength.
Part of the Rebel 9.0 release are the Rebel databases BT2450 and BT2630. This databases contain the positions of the BT2450 and BT2630 test suites. This test suites are designed by Hubert Bednorz and Fred Toennissen for measuring the tactical capabilities of chess engines. BT2630 is the predecessor of BT2450.
Each test suite contain 30 positions. Select each position and let Rebel think for 15 minutes (900 seconds). If a position is solved, write down its solution time in seconds. It doesn't count as a solution if Rebel finds, the move and then changes its mind. If after finding a move, then changing its mind, then finding it again, you should use the last time found. Any solution that is not found, score as 900 seconds. Add up all the times, divide by 30 and subtract the result from either 2630 or 2450. The final figure is Rebel's (BT-) ELO rating.
The new BS2830 (Bednorz-Schumacher) test suite can be downloaded from the Rebel 9 subscription aera. This suite is designed for programs, with an expected SSDF-ELO rating of 2300 or higher. The test suite contain 27 positions. Select each position and let Rebel think for 15 minutes. If a position is solved, write down its solution time in minutes. It doesn't count as a solution if Rebel finds, the move and then changes its mind. If after finding a move, then changing its mind, then finding it again, you should use the last time found. Any solution that is not found, score as 15 minutes. Add up all the times (in minutes) to the total time TT (in minutes). You get the (BS-) ELO rating with the following formula (updated in CSS 2/1998):
BS2830-ELO = 2830 - TT/1.5 - (TT * TT)/(22 * 22)Be aware, that the authors changed the formular in April 1998. The older formular (CSS 4/97) was
BS2830-ELO = 2830 - (TT * TT)/(17 * 17)So all older results must be recalculated.
Be cautious in interpreting the BT/BS results. The BT/BS values are only indicators for the tactical strenght of a chess engine. You can't measure the positional strength of a chess engine with this test suites.
On both the Rebel 9 CD and the Rebel 9 bonus CD you will find a Database, called BOOKTUTR.DAT. This is the so called (opening) book tutorial database. The databases are identical, so you have only to handle one of them. The version from the Rebel 9 CD will be copied during installation into the Rebel 9 GAMES directory, so you don't have to bother about the one, you found on the bonus CD.
If you open the BOOKTUTR database within the Rebel database window, you will find different opening lines, named in German, Englisch and Dutch. The coding used, is as follows: White: Language, Black: Opening, Place: Subvariation of the opening, named as Black.
To position to the start of the openings in one of the languages, press one of the keys "D" (German), "E" (English), or "N" (Dutch). After loading an opening, you can use the buttons "<-" and "->" (near the big "REBEL" button) to navigate through the moves of the opening. You can also use the keys "-" and "+" from the numpad for this purpose.
That's all to say about the BOOKTUTR database. It is simply a collection of different openings, to show which names are connected to what for moves and (more interesting) resulting positions.
Rebel 9.0 has more chess knowledge than Rebel 8.0. This extra chess knowledge is superior above some speed loss, see the Rebel 9.0 results on the Rebel homepage.
Last updated: Saturday, 11. April 1998