3000 math problems marathon

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The Goal

Cultivate a rigorous foundation in mathematics and formal proof-writing, elevating the analytical skills required for research.

The project consists of:

Curriculum Update: The previous plan consisted of 2700 math problems from Alcumus, 150 problems from StanfordOnline’s Introduction to Mathematical Thinking and 150 problems from Real Analysis.

The curriculum was revised to increase proof-writing practice.

The Motivation

Back in secondary school, I became interested in critical thinking and logic, which led me to the axiomatic side of mathematics: starting from a few assumptions and building everything through reasoning. That completely changed how I saw math.

Before that, math had mostly been about memorizing formulas and applying them on exams. Discovering proof-based reasoning showed me a deeper and more meaningful side of the subject, and I wanted to pursue it seriously.

The problem was that my early training had gaps. I had learned enough to pass exams, but not enough to reason rigorously or write proofs. After several unstructured attempts to “relearn everything,” I found the Art of Problem Solving and its Alcumus platform, which emphasized challenging problems and careful thinking.

Through that approach, math became creative and demanding rather than mechanical.

I first considered this project when I started university, but committed to it seriously on January 1st, 2025. It is designed to develop the rigor and mathematical maturity required for research-level work.

Watch the Presentation Video

Progress

Updated Weekly

1567
/ 3000
Problems Solved
🧮
319
hours
Spent on the Project

Alcumus

Alcumus Progress

My alcumus profile. You can look me up on AoPS, my username is anordinarylearner

Note: I only consider correctly solved problems.

  • Problems solved so far: 1539 / 2400
  • Problems attempted: 1757
  • Topics mastered: Prealgebra, Algebra, Number Theory
  • Remaining topics: Counting & Probability, Geometry, Intermediate Algebra, Precalculus

Stanford Online’s Introduction to Mathematical Thinking

Introduction to Mathematical Thinking

Pk0001, CC0, via Wikimedia Commons

  • Problems solved so far: 28 / 150

View the course assignments and my solutions:

Proofs from Elementary Mathematical Topics

Geometric Series Triangle

Kilom691, CC BY-SA 3.0, via Wikimedia Commons

  • Problems solved so far: 0 / 150

Real Analysis

Cauchy Sequence

Oleg Alexandrov, Public domain, via Wikimedia Commons

  • Problems solved so far: 0 / 300

Final Project

To be determined