I've recently been solving some of the questions in the PROMYS entrance test. I like how the last few problems seem puzzle-like (I mean that you wouldn't expect to find them on a maths exam), but they're still challenging (to me). They don't feel 'technical', unlike most olympiad problems. Does anyone have any suggestions as for where I can find other such problems?
2026-04-04 00:42:47.1775263367
Suggestions for problem-solving books
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