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gdr

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A browser-based spellbook manager for a custom tabletop/online roleplaying game. Built as a personal tool to simulate spell memorization, sphere harmonization, reagent planning, and grimoire presets, all without a backend.

  • Updated Apr 24, 2026
  • HTML

The Baltiysk (Kaliningrad) bottle note, solved: the GDR song Einheitslied in six jumbled 13×13 squares. Featured on Klaus Schmeh's Cipherbrain blog. Записка из бутылки в Балтийске расшифрована: песня ГДР «Einheitslied» в шести перемешанных квадратах 13×13.

  • Updated Oct 11, 2026
  • HTML

A personal tool built for an online tabletop RPG. It tracks every encountered monster's elemental resistances, computes global averages to guide combat strategy, enables side-by-side monster comparison, and provides a multi-formula damage calculator for weapons and spells.

  • Updated Apr 24, 2026
  • HTML

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