Posts

All the articles I've posted.

• Editorial: "Catch the Mole"

  16 Jul, 2025

  An editorial for the Codeforces problem "Catch the Mole."

• The Sprague-Grundy theorem

  12 Jul, 2025

  Motivating the Sprague-Grundy theorem from first principles.

• The mirror formula

  15 May, 2025

  A simple proof of the mirror formula.

• Hessians

  13 May, 2025

  What does the Hessian matrix really mean?