Contest Collections

Contains problems and solutions from several contests. Provided bahasa only. If you're on mobile and it cannot be downloaded, then use a browser other than Chrome. If that still doesn't work, use a laptop or PC.

OSK/OSP/OSN (With Solution)

This collection contains a selection of problems from the Indonesian Mathematics Olympiad series, including OSK (district), OSP (provincial), and OSN (national) rounds.

• Junior
  • OSN. 2020
• Senior
  • OSN. 2021 D1 2021 D2 2022 D1 2022 D2
  • OSP. 2024 2025
  • OSK. 2022 2023 2024 2025

College Hosted

A collection of mathematics competitions hosted by various university organizations in Indonesia.

• Pekan Matematika Nasional, organized by HIMATIKA Universitas Brawijaya.
  • Preliminaries. Primary 2023 Junior 2023 Senior 2023 Primary 2024 Junior 2024 Senior 2024 Primary 2025 Junior 2025 Senior 2025
  • Semifinal. Primary 2023 Junior 2023 Senior 2023 Primary 2024 Junior 2024 Senior 2024 Primary 2025 Junior 2025 Senior 2025
• MIC Logika UI (with solution), organized by HIMATIKA Universitas Indonesia.
  • Semifinal. 2022
  • Final. 2022
• UNDIP’s Mathematics Competition (with solution), organized by HIMATIKA Universitas Diponegoro.
  • Final. 2022

Other Contests (With Solution)

A collection of various mathematics contests from different organizers.

• Penta Mathematics Competition. PMC I PMC II PMC III PMC IV PMC V PMC VI PMC VII PMC VIII PMC IX PMC X

• Simulasi OSK SMA 2023 - Lajur Open. PDF Download

Undergraduate Contests

A collection of mathematics contests for undergraduate students.

• ONMIPA-PT, organized by Pusat Prestasi Nasional.
  • Preliminaries. 2024
  • Final. 2024