- Geometric puzzles using elementary operations
17 Jul 20 Construct tangent and perpendicular using elementary operations 321 words · 2 minutes read - October curiosities
12 Oct 17 A curated list of curosities of the month 589 words · 3 minutes read - An IOI practice round question
31 Aug 17 A board and 64 coins 1047 words · 5 minutes read - XOR curiosity
13 Aug 17 What happens when we XOR consecutive numbers 534 words · 3 minutes read - Nelson Goodman's method
28 Jun 17 Generalizing solution to logic puzzles 308 words · 2 minutes read

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