2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38513An overview is presented about old and recent methods to compute the $K\to ππ$ decay amplitude.5 pages, talk presented at the XXXth International Conference on High Energy Physics (ICHEP 2000), July 27-August 2, 2000, Osaka, JapanHigh Energy Physics - LatticeHigh Energy Physics - Phenomenologytext