Very very interesting!
Thank you for sharing your enormous amount of knowledge and work on these investigations and graphs!

Ulf Rathsman's programs use the same type of heuristics, but change evaluation for each move/ply like the Expert and later.
Maybe that's why the MM II outperforms the SC as I see in an ongoing thread in this forum, despite MM II's worse handling of pawn structures?
(https://www.schachcomputer.info/foru...ead.php?t=6837)
(Pawn structures were not treated good until the last Rathsman, the Plymate Victoria.)

Maybe Schröder did the same!?
You can browse his algorithms at https://web.archive.org/web/20120320...l/prostuff.htm

Feels like a pawn structure test in the "Khmelnitsky test" suite would have been interesting! ...

Thats a huge difference between superconny and expert, isnt it ?

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Indeed a huge difference, Thorsten. I would have thought they were closer as far as the software is concerned; just wood, some enhancements and more speed for the Expert... But the evidence is the evaluation management evolved a lot from 1984 to 1985. And surely did not freeze later on, that's why it is a struggle to identify the legacy "PSH effect" in the next Kittinger devices.
My conclusion: the Super Constellation is one of its own, a singularity blessed with some flash of genius!

Hi, I'm not an expert in this, but if you take a closer look at the games played by Super Nova in my "Welcome"-thread, I strongly have the impression that Dave Kittinger also implemented Pre Scan (Search) Heuristics in this little middle class computer!? Do you have any information about this?

Best regards
Roberto

My guess is Dave Kittinger did not jettison the PSH concept, but the more the positional evaluation evolved, the more the effect became diluted.

Here is a comparison graph, including both Beluga and Super Nova:


Of course there are some family genes (this is true with most program series from any programmer), but more specifically I think the peak in Strategy skills is mostly inherited from the inital bare PSH.

6 years later (compared to Beluga & SN), there is no more such a visible footprint from the PSH in the Emerald Classic' Khmelnitsky test (check the Strategy skill):


MfG,
Tibono

Miniaturansicht angehängter Grafiken

   

The schematics show us that the psh machines are those listed,

SC, CE, Beluga, Supernova.

Können wir jetzt nicht in Mess bzw. CB-Emu Pro die Bewertungen beim SC und CE einblenden, optional meinetwegen, nachdem die Speicherstellen entdeckt worden sind ? Sagen wir mal nur anzeigen wenn jemand die Print Evaluation Funktion als Tasten anzeigt.

Mich würde das sehr erfreuen einen SC bzw. CE mit Bewertungen zu sehen.

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