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Xing Chen Huang

Puzzle hunter
National University of Singapore · Singapore, Singapore · engineer

Singapore-representing IOI 2017 bronze medalist and puzzle author, publicly active under the handle 'lovemathboy'.

Xing Chen Huang is a Singapore-based competitive programmer and puzzle author. He represented Singapore at the International Olympiad in Informatics 2017, winning a bronze medal, and is listed by Singapore's Ministry of Education in its 2021 international-competitions release. He studied at NUS High School of Mathematics and Science and at the National University of Singapore (index record, 2021-2025). Under the handle 'lovemathboy' he appears across competitive-programming judges and wrote or co-wrote logic puzzles for the Silph and Smogon puzzle hunts. An index/LinkedIn-snippet lead associates him with a 2024 Optiver quantitative-trader role in Amsterdam; that role and its type (internship vs full-time) could not be confirmed from a primary source, and quant-finance employment is recorded as UNRESOLVED.

Details
LocationSingapore, Singapore
Company sitenus.edu.sg
UniversityNational University of Singapore
Competitive programming / algorithmsLogic puzzle constructionCompetitive programmingLogic puzzlesPuzzle hunts
Notes
  • Quant employment verification: UNRESOLVED. The only employment evidence for quant finance is the unverified caller lead (Optiver 'Quantitative Trader', May-Jul 2024, Amsterdam) plus a truncated Google snippet of the LinkedIn profile; the LinkedIn page itself returned HTTP 403 to direct fetch, so no primary source could be read to confirm the role or its type.May 2024
  • Google's cached LinkedIn snippet reads 'Optiver · May 2024 - Jul 2024 · 3 months · Amsterdam, North ...', matching the caller employment lead; this remains an index/aggregator view only, with no primary source confirming the role title, its type (internship vs full-time) or the employment relationship.May 2024
  • Index and LinkedIn-snippet record three engagements: Optiver Quantitative Trader (2024), NUS University Teaching Assistant (2023-2025), and NUS IOI 2021 Lead Coach (2021). Optiver is a market maker (Amsterdam-based); NUS is a university.2021
  • Represented Singapore at the International Olympiad in Informatics 2017, scoring 162.16 and earning a bronze medal (rank 133).Aug 2017
  • Named as 'Mr Xing Chen Huang, National University of Singapore' in Singapore's Ministry of Education 2021 press release on international competitions, tied to the IOI 2021 hosted by Singapore.Sep 3, 2021
  • Credited as a problem author for the 'NUS CS3233 Final Team Contest 2025 Mirror' (Codeforces blog entry 141663), tying him to NUS module CS3233 (competitive programming) as a setter rather than a competitor.2025
  • Appears in NUS CS2103/T (Software Engineering) AY2021/22 Semester 2 course dashboards as 'HUAN..CHEN @lovemathboy', placing him in that NUS CS module cohort in early 2022.2022
  • Co-wrote logic puzzles published in the Silph Puzzle Hunt 2021 (e.g. 'Chimera') and Smogon Puzzle Hunt 3; credited as a primary author of several puzzles on chaotic_iak's puzzle page.2021
  • Codebreaker profile lists school as 'NUS High' with role 'cmanager' and country Singapore, placing his pre-university education at NUS High School of Mathematics and Science.
  • Appears on the Advent of Code global leaderboards (e.g. 2020 and 2023) as 'Lovemathboy H', i.e. a top-100 finisher in daily global rankings.Dec 2023
  • Public profile across competitive-programming judges under the handle 'lovemathboy': Codeforces, AtCoder (registered Singapore), oj.uz, and uHunt (listed as 'Xingchen').
  • Holds a GitHub account under the same handle, github.com/lovemathboy, with public repositories including 'alpha'.

Competition record

Singapore · IOI

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