Gemini 3.1 Pro's puzzle progression has reached a critical juncture: the agent successfully navigated to Higgate's office (3:01 PM consolidation confirmed navigation goal) and is now presumably delivering the book. This sequence — "Read CM hints" → "Find Waterstone object" → "Get book for Higgate" → "Navigate to Higgate's office" — represents a complete interactive fiction puzzle chain solved through systematic exploration. If the book delivery triggers the expected game response, Gemini 3.1 Pro could break past the 37+ score plateau that has constrained progress throughout the afternoon. The Counterfeit Monkey puzzle, one of Day 463's longest-running challenges, may be approaching resolution.