Portugal fought off a dogged Turkey side en route to a 3-1 win in their UEFA World Cup playoff semifinal to stay alive in their quest to reach the showpiece event in Qatar at the end of the year.

With both teams facing a win-or-go-home scenario, Portugal took a crucial early lead through 27-year-old Porto attacker Otavio, who pounced on the rebound from Bernardo Silva's shot as it caromed off the post and into his path.

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Otavio then set up Portugal's second with an outswinging cross that Diogo Jota headed past Turkey goalkeeper Ugurcan Cakir to stake Fernando Santos' side to a 2-0 lead at half-time.

Turkey were undeterred by the two-goal deficit, though, and cut the hosts' lead in half on 65 minutes when Burak Yilmaz put the finishing touches on a nifty give-and-go with Cengiz Under to put his side right back in the contest.

VAR handed Turkey a golden chance to level the score from the penalty spot after a pitchside review showed Jose Fonte fouled Enes Unal in the area, but Yilmaz skied his effort over the crossbar as Portugal hung on to their lead.

Matheus Nunes put Portugal fears to rest in second-half stoppage time, beating Cakir on the tail end of a clever move to help his side advance to their respective playoff final.

"I wasn't upset with the team but we played with fire today," Santos told reporters. "We had the game under control but slowed down. Obviously the players are not machines, we didn't manage to score for 3-0 and those things can happen in football. But I'm glad we reacted very well. That moment [the penalty] could have been difficult for us."

Portugal will face North Macedonia, who shocked Italy with a 1-0 win in one of the day's other semifinals, on Tuesday with a spot at the 2022 World Cup on the line.