Cairo  - A first-half brace from tournament top scorer Dominic Adiyiah helped Ghana to a 3-2 victory over Hungary Tuesday to set up a Under-20 World Cup final against Brazil or Costa Rica.

Ghana started the brighter at the Cairo International Stadium and although Hungary could have had an early penalty when Krisztian Nemeth went down in the area, the Black Satellites took full control and went ahead after 10 minutes thanks to a defensive howler in the Hungarian defence.

A woefully underhit backpass from Adam Presinger was easily intercepted by Andre Ayew, who rounded Hungary goalkeeper Peter Gulacsi before crossing for Adiyiah to poke home from a metre out.

Ayew and Ransford Osei both tested Gulacsi with shots from the edge of the area before Adiyiah netted his second of the match and eighth of the tournament just after the half-hour mark, heading home a Samuel Inkoom cross from close range.

Adiyah almost netted his hat-trick five minutes before the break but his shot went just wide of the upright.

A tired looking Hungary certainly appeared to be feeling the effects of extra-time victories over the Czech Republic and Italy in their previous two matches and the Magyars also clearly missed the services of suspended midfield organizer and captain Vladimir Koman.

Roland Varga and Adam Balajti came on for Presinger and Nemeth for the second half and although Hungary started well, Ghana slowly began to re-exert control with Inkoom causing no end of trouble down the flank.

Hungary made a last roll of the dice with 20 minutes remaining, with Marko Futacs coming on for Zsolt Korcsmar, and the move paid immediate dividends as the Werder Bremen striker slotted home an Andras Simons cross on 73 minutes to make it 2-1.

Andras Gosztonyi could have equalized two minutes later but he blasted over while shortly afterwards Janos Szabo headed wide with the goal gaping.

However, with time running out, Hungary pushed more and more men forward and were caught on the break on 81 minutes when Abeiku Quansah produced a clinical finish to make it 3-1 to the African champions.

Balajti reduced the deficit to 3-2 with six minutes remaining but Ghana held on to remain on course to become the first African country to win the U-20 tournament.

Ghana must now await the outcome of the second semi-final between Brazil and Costa Rica later Tuesday to see who they meet in Friday's final.  dpa