Lady Luck helps Fernando Alonso clip Red Bull wings as he closes in on title

A seemingly unstoppable Alonso has now won three of the last four races, and four of the last seven, taking 133 points from a possible 175 in the process.

It has been a phenomenal turnaround from the Spaniard, whose two previous championship triumphs in 2005 and 2006 were clinched at Interlagos, and which may yet happen again in 2010.

There can be no doubt, though, fortune was on the Ferrari star's side in Korea as he watched Red Bull suffer their first double DNF for 51 races.

Mark Webber was the first to suffer, the Australian crashing out on lap 19 in the wet conditions that had resulted in the first 17 laps being run behind the safety car.

Heavy rain led to a delayed start of 10 minutes, and when the race did get under way, it lasted just three laps before being red flagged due to the dangerous nature of the conditions.

It was another 48 minutes before the race resumed, but then another 35 minutes before the field was allowed to go racing when the safety car finally made way.

With light rain still falling on a sodden track, Webber was the first to succumb, collecting Mercedes' Nico Rosberg in the process at a time when they were running second and third.

Then nine laps from the finish, Alonso inherited the lead just as the Renault engine in Sebastian Vettel's Red Bull began to blow before finally giving way in a plume of smoke seconds later.

When asked to explain the about-turn in results, Alonso employed one simple word: "Luck."

Alonso added: "We've been competitive from Silverstone (the British Grand Prix] onwards.

"Of course, the car has improved a lot and the team is doing a fantastic job every race in bringing new parts.

"We struggled to be on the podium for one part of the season, as I said, maybe because of the luck factor.

"But now we are achieving more wins than expected because of the luck factor as well because today we were third and one Red Bull crashed, one blew up. At the end of the year luck evens itself out."

It was Alonso's 26th career victory, with just six drivers ahead of him in F1's all-time standings - Michael Schumacher, Alain Prost, Ayrton Senna, Nigel Mansell and Sir Jackie Stewart.

From a 14-point deficit to Webber at the start of the race, Alonso now has an 11-point lead, with Lewis Hamilton 21 points down after he finished second in his McLaren.

The podium has kept Hamilton in the hunt, but he knows he needs more in the final two races in Brazil and Abu Dhabi.

"It's a great result, and I'm very happy with it," said Hamilton."My tyres were shot right at the end, so it was really just about bringing the car home and trying to score as many points. It is good for the championship and it is good for the team, but I hope in the next two races we can have some better results."

Webber accepted full responsibility for his accident, admitting: "It was totally my fault.

"I'm back with the others now on points, but there are still two races to go and I'll do my absolute best. I can absolutely still win the title."

Vettel now finds himself 25 points adrift and in fourth place in the standings, a remarkable reversal as he could have been leading but for his engine failure. He said: "That's life, how it goes sometimes, but we still have everything to play for."

It is now between those four as reigning champion Jenson Button is 42 points down with only 50 to play for after finishing 12th in a race in which nothing went right. He admitted: "It's pretty much gone as I'm miles behind, but it's still possible and I'll keep fighting."