https://twitter.com/bstephen2/status/1290560814596984835

https://twitter.com/bstephen2/status/1290561271235055616

https://twitter.com/bstephen2/status/1290561993095741445

https://twitter.com/bstephen2/status/1290926377148076033

https://twitter.com/bstephen2/status/1290562798616031235

Presumably Genrikh Kasparyan used his card index of chess puzzles as material to write one of his many books including: - Domination in 2,545 Endgame Studies by Genrikh Kasparyan. ISBN 0-923891-87-0 - 888 Miniature Studies by Genrikh Moiseyevich Kasparian. ISBN 978-86-7686-147-7

As a chess champion, he surely used to to fuel his chess studies and chess career.

It Took Decades To Create This Chess Puzzle Database (30 Thousand), 2020. https://www.youtube.com/watch?v=Y9craX0M_2A.

A chess School named after Genrikh Kasparyan (alternately Henrik Kasparian) houses his card index of chess puzzles with over 30,000 cards.

The cards are stored in stacked wooden trays in a two door cabinet with 4 shelves.

There are at least 23 small wooden trays of cards pictured in the video, though there are possibly many more. (Possibly as many as about 35 based on the layout of the cabinet and those easily visible.)

Kasparyan's son Sergei donated the card index to the chess school.

Each index card in the collection, filed in portrait orientation, begins with the name of the puzzle composer, lists its first publication, has a chess board diagram with the pieces arranges, and beneath that the solution of the puzzle. The cards are arranged alphabetically by the name of the puzzle composer.

The individual puzzle diagrams appear to have been done with a stamp of the board done in light blue ink with darker blue (or purple?) and red inked stamped pieces arranged on top of it.

ᔥu/ManuelRodriguez331 in r/Zettelkasten - Chess players are memorizing games with index cards

The structure of the filing system for the Wörterbuch der ägyptischen Sprache was designed based on the work done for the Thesaurus Linguae Latinae started in 1894. Texts in the collection were roughly divided into passages of about 30 words and written in hieroglyphic form on postcard-sized slips of paper. The heading contained the designation of the text and the body included the texts' context (inscriptions, etc.) as well as a preliminary translation of the passage.

These passages were then cross-referenced with other occurrences of the hieroglyphics to provide better progressive translations which ultimately appeared in the final manuscript. As a result some of the translations on the cards were incomplete as work proceeded and cross-comparisons of individual words were puzzled out.

A slip showing a passage of text from the victory stele of Sesostris III at the Nubian fortress of Semna. The handwriting is that of project leader Adolf Erman, who had "already struggled with the text as a high school student".

Historically the vast majority of zettelkasten didn't have the sort of structure and design of Luhmann's, though with indexing they certainly create a network of notes and excerpts. These examples are just subsets or excerpts of someone's reading of these books and surely anyone else reading any book is going to have a unique set of notes on them. These sets were specifically honed and curated for a particular purpose.

The interesting pattern here is that someone is selling a subset of their work/notes as a set of cards rather than as a book. Doing this allows different sorts of reading and uses than a "traditional" book would.

I'm curious what other sort of experimental things people might come up with? The "novel" Cain's Jawbone, for example, could be considered a "Zettelkasten mystery" or "Zettelkasten puzzle". There's also the subset of cards from Roland Barthes' fichier boîte (French for zettelkasten), which was published posthumously as Mourning Diary.