Q&A for those who create, solve, and study puzzles

Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. It's built and run by you as part of the Stack Exchange network of Q&A sites. With your help, we're …

Feb 12, 2026 · This is NOT a general tag for all puzzles that are somehow indirect. A riddle gives indirect clues about an unnamed object or concept to be identified, often in a poem format.

5 days ago · Q&A for those who create, solve, and study puzzles

Aug 19, 2024 · I am invisible, yet I make things clear, I can be shallow or deep, bringing distant things near. In silence, I speak, and in stillness, I show, reflecting both light and the darkness below. Without...

Sep 3, 2014 · You are a prisoner in a room with 2 doors and 2 guards. One of the doors will guide you to freedom and behind the other is a hangman–you don't know which is which, but the guards do know. …

Jan 26, 2024 · The D'Agapeyeff cipher is an as-yet unbroken cipher that appears in the first edition of "Codes and Ciphers", an elementary book on cryptography published by the cryptographer …

A puzzle that requires an example to be built that fits certain criteria.

Jun 10, 2021 · Here's how I would think about it Number the cells of each grid in the following way, Now imagine there are two shaded cells beginning at cell 1 (they occupy the same space). On each step, …

Jul 27, 2014 · Here's a fun (albeit difficult) one: Make these equations true using arithmetic operations: 1 1 1 = 6 2 2 2 = 6 3 3 3 = 6 4 4 4 = 6 5 5 5 = 6 6 6 6 = 6 7 7 7 = 6 8 8 8 = 6 9 9 9 = 6 For example: ...