South Korea are braced for what coach Hong Myung-Bo believes will be a far more potent Algeria attacking force than the Desert Foxes put up against Belgium when they meet on Sunday.

The Koreans face the North Africans in the second serving of Group H action in Porto Alegre.

Korea hold the edge after picking up a point in their opening 1-1 draw with Russia, while Algeria, beaten 2-1 by group favourites Belgium, will be heading home with another loss.

"Algeria defended well (against the Belgians) but I don't think they'll play the same way against us.

"They've got a lot of excellent forwards, they are very quick, these are very dynamic players," Hong told the pre-match press conference on Saturday.

"Their three strikers are really rapid, with good individual technique, so when there are duels we have to reduce their opportunities."

Hong, a national icon back home after skippering Korea to the 2002 semi-finals, was also wary of the Algerians' midfield.

"They like to press hard, we have to resist this pressure and play in space as one should."

He says he hasn't yet decided on a team that were it to take three points on Sunday would be on the verge of qualifying in what is their eighth consecutive World Cup.

"I can't predict the result," said Hong.

"But what I can say is that we're going to play to win, because we absolutely have to win to hope to reach the next round.

"We want to score first...our players are going to try to convert (chances), but we'll have to be patient.

"We're going to have opportunities - the key to the game will be if we can convert these into goals."