On October 21, 2005, he became the sole recipient of all five first prizes at the 15th International Frederick Chopin Piano Competition in Warsaw, taking First Prize and the polonaise, mazurka, sonata, and concerto prizes. No other pianist has achieved this feat. According to ABC News, one of the judges, Professor Piotr Paleczny, said that Blechacz "so outclassed the remaining finalists that no second prize could actually be awarded." Another judge, the distinguished Irish pianist John O'Conor, said "He is one of the greatest artists I have had a chance to hear in my entire life," according to PBS. Blechacz was the first Pole to win the prize (given every five years) since 1975, when Krystian Zimerman won.