Halloween at the Portal. The Hollow, a haunted cipher maze, is free to play until 2 November. Enter The Hollow

3 stages · Medium · free account

THE ARCHITECT'S ENCRYPTION PROTOCOL

📜 Briefing
You've intercepted a transmission from the Architect's mainframe. Intelligence suggests it contains coordinates to a hidden access point in the Matrix. The message has been encrypted using a cascading security protocol - each layer must be decrypted in sequence, with each solution unlocking the next layer. The Architect is known for using classical ciphers enhanced with modern techniques. Your mission: penetrate all three encryption layers and discover the final access coordinates.
  1. 1 Layer One: The Binary Veil
  2. 2 Layer Two: The Beaufort Barrier 🔒 opens with stage 1's answer
  3. 3 Layer Three: The Transposition Trap 🔒 opens with stage 2's answer

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