The hunt is over! Thanks so much for solving! Solutions are available for all puzzles. A wrap-up post will be coming in around a week late January.

The 25 Venters

Solves

Total: 6

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Puzzle Solve Time
19 Those Crafty Penguins
10 Flipping Channels
13 The Arcade
5 1. e4 e5
4 Subnivean Snake
2 Metrology Lab