Pandolfini’s Puzzler #47 – The Fortress and the Cage, Part 2 – ChessKid.com https://www.chesskid.com/learn/articles/pandolfinis-puzzler-47---the-fortress-and-the-cage-part-2
Professor: Hello, class. I see you’re back for more after last week’s discussion. Zephyr: We certainly are. Hale: You had me thinking of fortresses all…
Moving to the opposite color, on the other hand, loses. Answer 3: By 1. Ndf6!