What is a progressive score in chess?

In chess tournaments, when two players end up with the same score on the final round, the tie needs to be broken for ranking purposes. Different systems of rating follow different rules for such tie-breaking, and the FIDE (Federation Internationale des Echecs) or the Worldwide Chess Federation system uses the cumulative progressive score. Progressive score in a round is the points obtained for the result in the current round plus the progressive score of the previous round if any. In general, the system tends to reward early wins rather late wins.