Welcome to the archives! Here you can find past @puzzletheory Twitter puzzles, hints, and answers. Week 01: Monday | Tuesday | Wednesday | Thursday | Friday (07/20-07/24) Week 02: Monday | Tuesday | Wednesday | Thursday | Friday (07/27-07/31) Week 03: Monday | Tuesday | Wednesday | Thursday | Friday (08/03-08/07) Week 04: Monday | Tuesday | Wednesday | Thursday | Friday (08/10-08/14) Week 05: Monday | Tuesday | Wednesday | Thursday | Friday (08/17-08/21) Week 06: Monday | Tuesday | Wednesday | Thursday | Friday (08/24-08/28) Week 07: Monday | Tuesday | Wednesday | Thursday | Friday (08/31-09/04) Week 08: Monday | Tuesday | Wednesday | Thursday | Friday (09/07-09/11) Week 09: Monday | Tuesday | Wednesday | Thursday | Friday (09/14-09/18) Week 10: Monday | Tuesday | Wednesday | Thursday | Friday (09/21-09/25) Week 11: Monday | Tuesday | Wednesday | Thursday | Friday (09/28-10/02) Week 12: Monday | Tuesday | Wednesday | Thursday | Friday (10/05-10/09) Week 13: Monday | Tuesday | Wednesday | Thursday | Friday (10/12-10/16)

Puzzles are theoretically meant to progress in difficulty every week, from easier puzzles on Monday to fiendish puzzles by Friday. In practice, any puzzle can be challenging if you don't have the proper insights, so don't feel bad if you have a hard time on an "easier" one!