> This is also a chess puzzle marked as very hard that a person who is good at chess should give themselves fifteen minutes to solve. Is it, though? I play at

> This is also a chess puzzle marked as very hard that a person who is good at chess should give themselves fifteen minutes to solve. Is it, though? I play at around 1000 Elo – I have a long-standing interest in chess, but my brain invariably turns on fog of war that makes me not notice threats to my queen or something – and I solved it in something like one minute. It has very little moving parts, so the solution, while beautifully unobvious, can be easily brute-forced by a human.