S9fES

Aliases: Scheme 9 from Empty Space

Provenance: commit c24a25422c · authored 2026-03-11T18:13:33+01:00 · agent claude-code · model claude-sonnet-4-6

1 source · not in taxonomy (canonical name didn't match any upstream)

Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.

; Towers of Hanoi in S9fES (Scheme 9 from Empty Space)
; Classic recursive solution demonstrating S9fES Scheme

(define (hanoi n from to via)
  (if (> n 0)
      (begin
        (hanoi (- n 1) from via to)
        (display (list 'move 'disk n 'from from 'to to))
        (newline)
        (hanoi (- n 1) via to from))))

(hanoi 3 'left 'right 'center)