Comentarii Jbmo 2015 Apr 2026

A game-theory problem on a board involving L-shapes. It required determining the minimum number of marked squares needed to ensure a certain outcome. Key Commentary Insights

. Commentary suggests this was a very accessible problem, possibly even at a 5th or 6th-grade level, which resulted in a high number of maximum scores. Comentarii JBMO 2015

Problem 1 was criticized for being perhaps too simple for an international olympiad, acting more as a "points booster" than a differentiator for top talent. A game-theory problem on a board involving L-shapes

. Notes indicate that many participants were able to solve this using analytical or vector methods. Comentarii JBMO 2015