January 13, 2026 • Author David Grann often writes about obsession. His stories feature people doing extraordinary, and often dangerous or morally questionable, things in pursuit of ambitious goals.

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Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Scroll down for hints and conversation about the puzzle for Tuesday, Jan. 13, 2026. By New York Times Games Scroll down for hints and conversation about the puzzle for Monday, Jan. 12, 2026. By New ...