Compared to the NOVAG SUPER FORTE B version, the selective move evaluation functions of the NOVAG SUPER FORTE C version was significantly further improved. More pondering calculations are now performed compared to previous versions. In addition, a new technique for recursive move evaluation is now integrated into the search in order to prevent missing out on promising variations.
The NOVAG SUPER FORTE C version’s positional evaluation improvements are the main differences between it and the previous A and B versions. For chess programs an increase in positional play results at the same time in a reduction in the tactical qualities. To a certain degree the reduction in the tactical play can be compensated by the reduction of the selective play setting (= lower than 4).
As a result of this change, chess problems with a high tactical content can increase the solving times for the NOVAG SUPER FORTE C version when comparing the time to the previous A and B versions. This phenomenon however should not be mistaken as proof for the fact that the NOVAG SUPER FORTE C version program is lower in play strength. Professional chess programmers consider this increase in positional play knowledge a positive improvement that should provide a significant improvement of the ELO rating strength.
The NOVAG SUPER FORTE C version has all the new functions that were introduced with the NOVAG SUPER FORTE B version with the exception of the VERBOSE function which has been replaced by the numerous new functions added to the SUPER INTERFACE SYSTEM.
Features available in NOVAG SUPER FORTE “C”
- The degree of selective search can be chosen by the user.
- User Settable “Speed Chess” timings are allowed.
- Verify whilst thinking is allowed.
- Display of level and degree of selectivity whilst thinking is allowed.
- Scrolling backwards and forwards through the game whilst computer is thinking without changing computer memory is allowed.
- “Start of Game” and “End of Game” keys may be used to control scrolling.
- “Sound” may be switched on or off while the computer is thinking.
- “Info” may be switched on or off while the computer is thinking.
- “Autoplay” may be switched on or off whilst the computer is thinking.
- Improvements and additions to the SUPER INTERFACE SYSTEM to communicate with an IBM PC or compatible.
To choose the degree of selectivity, you press the SET LEVEL key. When you have pressed the “SET LEVEL” key the display will read level “nn sel m” where “nn” is the current level selected between 1 and 64 and “m” is the current SELECT (selectivity) setting between 0 and 7. To change the SELECT setting use the “-->” key and the number “m” will increase for each depression until it reaches 7 and then reset to 0 etc.
“SELECT 1” means that on the last ply of the given search the computer will only look at moves which are forcing or better than what has been found so far. This means that when the display shows the computer is doing a 6 ply search, for example, then ALL of the moves of the first 5 plies are searched, but only some of the 6th ply moves are looked at. Naturally captures and checks are then examined deeper.
“SELECT 2” means that on the last 2 plies of the given search the computer will only look at moves which are forcing or better that what has been found so far.
“SELECT 3” means the computer will operate it’s selective search on the last 3 plies of the given search depth.
“SELECT 4”, the last 4 plies, etc.
“SELECT 0” means the computer will look at all moves up to the given ply depth. When set for “SELECT 0” the computer will not overlook any combination which falls within its current search depth.
Recommended choice is “SELECT 5” for NOVAG SUPER FORTE C version.
Solve Mate always uses “SELECT 0” to make sure no mate is overlooked.
Select level may also be used for “Infinite” time control. Probably the best setting is “SELECT 3” or “SELECT 4”.
The degree of selectivity may be set independently for Black and White. However, the computer will always assume you wish to have the same level for black and white unless you tell it otherwise.
Excerpts taken from “NOVAG SUPER FORTE C’ New Features addendum to the User Manual translated from German by Spacious-Mind.