Traps, Puzzles, and Golden Idols - an Introduction to the “Fourth Pillar of D&D”
Amazon.co.jp: The Game Master's Book of Traps, Puzzles and Dungeons: A Punishing Collection of Bone-crunching Contraptions, Brain-teasing Riddles and Stamina-testing Encounter Locations for 5th Edition Rpg Adventures : Ashworth, Jeff, Kalle, Jasmine,
Three Puzzles of the Feywild (D&D 5e) – EN Publishing
Shahiri Puzzle Box - AAW Games
D&D Door Puzzles: A Designer's Guide (with free puzzles)
How to Create Fun and Fascinating D&D Puzzles - Posts - D&D Beyond
How To Run DnD Puzzles And Some Of The Best DND 5e Puzzles & Traps - The Arcade Man