A King’s Indian Sprint

Ognjen Cvitan (born 1961) is a Croatian Grandmaster most notable for winning the 1981 World Junior Championship.
Our featured position comes from a game played during the 1997-98 season of the German Bundesliga, one of the top team chess leagues in the world.
In a wild King’s Indian Defense, typical of the evergreen Mar del Plata Variation, Cvitan reaches the finish line ahead of the renowned Lubomir Ftacnik.
How did Cvitan (Black) kick off a memorable combination on his 23rd move?