LogiChess: Part 1 (a 4KB chess program)
5{Disclaimer: I filmed most of this back in October 2020 ... was waiting on Kaare's book to film the last part ... I promise my next videos will use a tripod to avoid giving you motion sickness}
I've been fascinated with Chess computers for a while. One popular implementation was LogiChess by Kaare Danielsen which has been used in SciSys and Tandy/Radio Shack chess computers.
https://www.chessprogramming.org/LogiChess
https://www.chessprogramming.org/Kaare_Danielsen
This is part 1: in this video I fiddle around with a Tandy 1650 chess computer and flick through the book Kaare wrote for Borland's Turbo Pascal called "Turbo GameWorks" (ISBN 0-87524-146-8).
The Tandy 1650 uses SciSys's 0609V171 single chip computer (an Hitachi HD6301V) that implements Kaare's 4KB chess program.
In part 2 I hope to extract a SciSys chip from one of my chess computers and use it as a "chess co-processor" with an Arduino for I/O ... maybe. I know, totally pointless but I like to tinker.
Kaare's Turbo Pascal book covers Chess, Bridge and Gomoku.
I also have a few books by David Levy:
"How Computers Play Chess" (ISBN 978-4-87187-801-2),
"Computer Chess Compendium" (ISBN 4-87187-804-X),
"Computer Gamesmanship" (ISBN 978-4-87187-805-0).
And finally, the Spracklen's (Dan & Kathe) book detailing their original Sargon implementation in Z80 assembly: "SARGON: A Computer Chess Program" (ISBN 0-8104-5155-7).