MathDB
Chess Tournament

Source: ToT - 2001 Spring Senior A-Level #5

August 17, 2011
combinatorics unsolvedcombinatorics

Problem Statement

In a chess tournament, every participant played with each other exactly once, receiving 11 point for a win, 1/21/2 for a draw and 00 for a loss. (a) Is it possible that for every player PP, the sum of points of the players who were beaten by P is greater than the sum of points of the players who beat PP? (b) Is it possible that for every player PP, the first sum is less than the second one?