HIARCS Chess Forums

Now that the Yeno 301 XL rom has been read out, there is another clue in it:

Visible with a Hex_editor, at offset 0xBBC:

(C)1988Bray

Maybe Chris Bray?

Another Name to the Riddle regards,
bataais

That C64 version doesn't seem very responsive.. Maybe try the Apple II version?
https://archive.org/details/a2_Chess_v7 ... Crack_Band

Hi Fern,

why not play it in the browser? It's the C64 version of Chess 7.0 by Larry Atkins.

https://archive.org/details/Chess_7.0_1983_Odesta

Still, you could also use any C64 emulator and put in the ROM file, easily found on the web.

Steinitz Regards,
Michael

Very interesting modified Elite on a Swiss second hand store: https://www.tutti.ch/de/vi/bern/spielzeuge-basteln/spielkonsolen-games/schachcomputer-fidelity-elite-a-s/50954636 https://c.tutti.ch/images/5654523469.jpg https://c.tutti.ch/images/5653331483.jpg https://c.tutti.ch/images/5645253611.jpg h...

The question, who programmed all those clones, is now answered, with a secret key combination, the name is displayed in the LCD (on some Millennium devices.)
https://www.schachcomputer.info/forum/s ... p?p=105654

Easter Egg Regards,
Michael

https://www.ebay.com/itm/134036060393 Rare Tiger Marathon containing the Kaare Danielsen 4k program with 3 styles, all other Tiger / Krypton have the lame 72 Levels chess from a different unknown programmer. Same here but travel version, Tiger Trekker. (There are two versions of these devices, the o...

Hi Eric, You are right, the manual is very confusing and inconsistent, messing with White/Black and Opponent/Program. I think you are on the right track explaining these difficult descriptions. When I first read the manual, I thought, the features for both sides (all except F4&F5) will be automa...

Thanks Eric for explaining :) You were faster than I tried, here: If you have a look at the parameters of the predefined styles, you can see that there really are only 5 styles: 1/9, 2/8, 3/7, 4/6, 5. (The manual says style 1 is very cautious for White / very agressive for Black, style 9 is vice-ver...

The Horvath weightings are very confusing, but I think I found the formula. The defined styles are symmetric, so how to get the corresponding numbers? (F4 and F5 are only for one side, and seem to be inverted.) 0 <=> 99 2 <=> 40 5 <=> 20 7 <=> 15 10 <=> 10 I tried 100/x first, but hm.. lets take x+1...

Selectivity needs chess knowledge, difficult to put in 4 KB ROM and 176 Bytes RAM..
Brute force is much simpler, so the tiny programs work this way, I suspect.

Simple Regards,
Michael

Hi, It seems there was a a software revision, from CXG Computachess II to CXG Advanced Portachess. The MCU is the same, HD44840. The older one had rev. A13, still White & Allcock https://www.schach-computer.info/wiki/index.php?title=Hanimex_HCG_1700 https://www.schach-computer.info/wiki/images/6...

Hi Brian,

my Tiger Trekker and Krypton Jupiter solve your mate-in-3 problem, but not this one:



Later (>2006, more RAM) Millennium 8-in-1 devices will solve it on the infinite level.

Small and slow brute forcers Regards,
Michael

CXG had some Sphinx chess computers with Spanish town names like Granada, Alicante etc. in 1992. I think 72 levels was only a selling argument. And I suspect it could be a Riet Paap model, he once wrote about walking away from Eric White of CXG, maybe he left a prototype behind. I'm not amazed by th...

This weak program seems to come from the 4K 68hc05 CXG Sphinx Madrid, 1992, with only 16 Levels to begin with. (Same grouping, actually only 4 Levels, 4s, 30s, 2-3min, 10min (M in 2)). http://alain.zanchetta.free.fr/docs/Misc/CXG_901_Sphinx_Madrid_EN.pdf It also has that awkward position verificatio...

I tried the postition on both Sensory 9's. SC9A: 1m 8s, but believes it's a stalemate :) SC9B: 52s A version with a stronger program won the prize for the Best Commercial entry at the 1983 World Micro Champion­ship, having been launched just prior to that event in the USA, but not on sale in Europe ...