Rules

Teams

Eligibility: Current students at Singapore secondary schools, junior colleges, Millennia Institute, polytechnics, ITE or equivalent
Team size: 3 to 5 members. Schools can be mixed
Account: One shared login. Every action applies to the whole team
Leaderboard: Team names and schools only

Set: 40 numbered problems worth 3 to 6 points, plus additional problems A, B and C worth 8
Open at once: Up to 4. A, B and C are always open and sit outside this limit
Unlocking: Solving or skipping frees a slot. Choose the next problem from its title and points. The statement stays hidden until it is unlocked
Answers: Three digits, padded with leading zeros. Multiple-choice problems exceptedEnter 90 as 090
Retries: Unlimited, 30 seconds apart. A wrong answer keeps the slot occupied
Points: Full value on the first correct attempt, 1 less for each wrong attempt before it, minimum 1. A 6-point problem solved on the third attempt earns 4
Skips: 7 per team. Each costs 1 point and closes the problem for good

Screen recording: Required on every member’s device for the whole competition. Practise recording and exporting beforehand
Rough work: Upload diagrams, computations and code files, numbered by problem
AI tools: Not allowed in any form. Formula lookup and graphing in Wolfram or Desmos are allowed
Review: Missing recordings or workings may disqualify the team unless other proof is provided. Breaches may lead to penalties, disqualification or referral to the school
Appeals: On problems, solutions or penalties. Accepted appeals update scores and rankings

Up to Secondary 6, A-Level or IB Mathematics, plus standard olympiad techniques

Algebra

Number theory

Combinatorics and probability

Geometry