This page lists corrections and clarifications for the first printings of many How-to-Tetris guidebooks. These errors were caught post-publication, despite three rounds of word-for-word and picture-for-picture checks, as well as AI-assisted fact checking with DeepSeek, ChatGPT, Claude AI, and Qwen AI. They have been documented here for clarity and will be corrected in future editions. … Continue reading Post-Publication Errata