ARIZ-85C / ARIZ-85V Worksheet (PWA)

Offline worksheet for ARIZ-85C (Lithuanian/Russian name ARIZ-85V, АРИЗ-85В), the Algorithm of Inventive Problem Solving by Genrikh Altshuller. Covers Parts 1–3: problem analysis, problem model and resources, ideal final result and physical contradictions. Interface in English and Lithuanian (lietuvių).

Live: https://ariz85v-pwa.inventship.workers.dev/ (Cloudflare Workers static assets; deploy with npx wrangler deploy)

Features

• Two languages: flag menu in the top-right corner (LT / EN); first visit follows the browser language
• Works offline and installs as an app (Chrome/Edge: install icon in the address bar)
• Several worksheets in one browser: switch, New, Rename, Duplicate, Delete — each autosaves
• Examples: open a copy of a worked case (Pencil, Bus — each in EN and LT); export your own worksheet as an example
• Open/Save .ariz files (Open imports as a new worksheet), optionally password-encrypted (AES-GCM 256, PBKDF2-SHA256)
• Images per step: click, drag & drop or paste
• Help: round ? in the top-right corner → Using worksheets & examples and ARIZ guide (steps, rules, typical conflicts, separation principles, terms); ⓘ next to each step opens a short explanation with a guiding question
• Colour scheme from DrakonWidget, kept as tokens at the top of style.css (to be replaced by branding rules)
• Print / Save as PDF
• No server, no tracking: data never leaves your device unless you save a file

Repository layout

index.html             page shell + toolbar (static texts marked data-i18n)
i18n.js                language choice, LT dictionary (English strings are keys), flags, language menu
app.js                 form schema, rendering, worksheet library, examples, .ariz open/save, encryption
help.js                help pages and ⓘ step callouts — English
help-lt.js             the same help texts in Lithuanian
examples/index.json    list of examples: [{ file, lang, name, description }]
examples/*.ariz        example worksheets (unencrypted .ariz): pencil, bus — EN and LT
tools/make_*.py        Python scripts that generate the example files (texts + SVG drawings, with self-checks)
style.css              brand tokens (top), layout, dark mode, print styles
sw.js                  service worker (offline cache) — bump VERSION on every release
manifest.webmanifest   PWA metadata, .ariz file handler
icon.svg               app icon
CHANGELOG.md           release notes

Static files only, no build step. GitHub Pages serves the repo root from main.

Run locally

Service workers need http(s), not file://:

python -m http.server 8765

Then open http://localhost:8765.

Releasing

1. Change the files, bump VERSION in sw.js and the version in index.html.
2. Add a CHANGELOG.md entry.
3. Commit, tag vXX.YY, push with tags.

Translating

• Every user-visible English string is passed through tr(); i18n.js holds I18N.lt with the English text as key.
• A missing translation falls back to English and is listed in i18nMissing (check it in the browser console with the language set to LT — it should be empty).
• Static HTML: data-i18n (text), data-i18n-html (markup), data-i18n-attr="title,placeholder" (attributes).
• Help texts: help.js (EN) and help-lt.js (LT) use the same keys.
• Terminology (LT): problema = the initial, unformulated situation; uždavinys = the formulated task (mini uždavinys, uždavinio modelis). TP / FP, IGR, MLR, OZ / OL, gaminys / įrankis.
• To add a language: add it to LANGS and FLAGS, a dictionary in I18N, a help-xx.js, and examples with that lang.

Adding an example

1. Fill a worksheet, then ⋯ → Export as example… (unencrypted, includes name, description and language).
2. Put the file in examples/ and add an entry with its lang to examples/index.json.
3. Add the path to FILES in sw.js, bump VERSION, release.

Or write a generator like tools/make_bus.py (both languages in one script, checks that EN and LT fill the same fields):

python tools/make_bus.py examples

.ariz file format

JSON object of field name → text, plus uploadedImages (field → data:image/... URL). Optional _name, _description, _lang (worksheet name, example description, language); readers that don't know them ignore them. Field names do not depend on the interface language, so a file works in both. Encrypted files are { "salt": [...], "iv": [...], "data": [...] } byte arrays (16-byte salt, 12-byte IV, 100 000 PBKDF2 iterations).

Credits

ARIZ-85C method by Genrikh Altshuller.

License

Code: MIT.