A puzzle author's newsletter promoting printable logic and variety puzzle books, with affiliate links and self-promotion dominating the issues. A later issue shifts to a long technical post about how the Claude Code assistant stores and reads its memory files.
Website: https://pencilpaperparacosm.com/
James Lyndsay of Workroom Productions shares an itemised, self-audited account of what his company spends on LLM API usage, and why he deliberately avoids subscription billing. The newsletter also includes essays on the hidden costs of AI and a logic puzzle.
A newsletter of variety puzzles and cryptic crosswords, each issue presenting a themed puzzle with a short editorial note about the solving crew and related puzzle projects. Readers get new free and subscriber puzzles plus recommendations for other puzzle publications.
A retailer's blog covering speedcubing: competition announcements, store feature updates, and explainers on how speedcubes work. Readers get news on Bangladesh's cubing scene and practical product information from the CubeNation shop.
One short email a week with hand-picked newsletters from the index. Free, no spam, unsubscribe anytime.
