1K ZX Chess

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1K ZX Chess
Publisher Sinclair
Senior Developer David Horne
Erstveröffent-
lichung		 1982
platform Sinclair ZX81
genre Computer chess
Subject chess
Game mode Single player
control keyboard
medium cassette
language English

1K ZX Chess is a chess program that appeared in 1982 for the Sinclair ZX81 home computer .

Gameplay

David Hornes computer chess largely complies with the usual rules of the game. However, compromises had to be made due to the very low memory. Castling , en passant and transformation are missing . The AI always plays with white and has two possible opening moves . An extended version for the Timex Sinclair 1000 with all the rules appeared later .

The chessboard and the chess pieces are not represented with pixel graphics , but with letters and some symbols from the character set .

Reviews

The computer chess program was apparently not discussed further in the German-language press.

However, among fans of the "little Sinclair" it is considered one of the best-known and best games, which is still reflected today.

Remarks

This title is one of the few programs that can do without the almost mandatory expansion of the RAM . It held the record for the smallest chess program (672 bytes ) for 33 years before it was replaced by BootChess (487 bytes) in 2015. The programmer David Horne published the source code in the British computer magazine Your Computer in a series of articles between 1982 and 1983. The game was written entirely in machine language.

Web links

Individual evidence

  1. ↑ 1K ZX Chess - Chessprogramming wiki. Retrieved May 28, 2019 .
  2. ↑ © Future Publishing Limited Quay House, The Ambury, Bath BA1 1UA All rights reserved Engl, Wales company registration number 2008885: Top Ten ZX 81 Games | Retro gamer. Retrieved May 25, 2019 (American English).
  3. ↑ 33 year old ZX81 1K ZX Chess world record broken. In: Retro Games Collector. Retrieved January 28, 2015, May 25, 2019 (UK English).
  4. ^ Your Computer Magazine (December 1982) . December 1982 ( archive.org [accessed May 28, 2019]).
  5. ↑ Your Computer Magazine (January 1983) . January 1983 ( archive.org [accessed May 28, 2019]).
  6. ↑ Your Computer . IPC Electrical-Electronic Press, February 1983 ( archive.org [accessed May 28, 2019]).
  7. ↑ Full ZX-81 Chess in 1K. Retrieved May 28, 2019 .
  8. ↑ ZX81 tape 1K ZX Chess by Sinclair Research. Retrieved May 28, 2019 .