India qualified for the World Twenty20 semi-finals and knocked out Australia after Virat Kohli smashed a brilliant unbeaten 82 in their do-or-die showdown in Mohali on Sunday. Kohli's powerful 51-ball knock propelled India to a six-wicket victory, successfully chasing down Australia's 160-6 total and keeping their World T20 title dreams alive.
India now face the West Indies in a semi-final encounter in Mumbai on Thursday, despite the Caribbean side suffering their first loss at this tournament to underdogs Afghanistan earlier on Sunday.
England play New Zealand in the other semi-final in New Delhi on Wednesday, before the final showdown at Kolkata's Eden Garden on Sunday.
India, who won the inaugural tournament in 2007, are gunning to become the first nation to clinch the title twice and the first ever on home soil.
Australia's hopes of winning their first World T20 trophy are once again in tatters, with the top-ranked Test side now bowing out of the tournament.
Chasing Australia's challenging total, India had looked down and out at 94-4 but Kohli and skipper Mahendra Singh Dhoni (18 not out) put on 67 runs to take the team to the finish line.
The 27-year-old Kohli planned his knock to perfection, mixing caution with aggression to smash two sixes and nine fours in a pressure-cooker atmosphere at the packed Punjab Cricket Association ground.
"This innings has to be in my top three, perhaps the top right now because I'm a bit emotional," Kolhi, named man of the match, said.
Dhoni, who effected three dismissals, hit the winning four with five balls to spare to trigger wild celebrations in the stands.
Shane Watson's international career ended in disappointment although the retiring Australian all-rounder did well to grab two key wickets and a spectacular running catch. Earlier, opener Aaron Finch shared 54 runs for the opening wicket with Usman Khawaja to give Australia a flying start after Steven Smith won the toss and elected to bat.
Afghanistan had failed to qualify for the semi-finals heading into Sunday's match, but were determined to take home a consolation victory against the Windies, who had already made the final four.
The never-say-die Afghans clinched an historic six-run victory, their first ever in the Super 10 stage of the World T20, sparking team celebrations on the pitch.
Windies captain Darren Sammy brushed off his side's first loss, describing it as a "banana skin" on the road to clinching their second crown after wining the final in 2012.
"We have two more steps to take, and we just had a slight banana skin in the race, and we just have to regroup and come back again," he said.
The West Indies won the toss and opted to bowl in Nagpur, with leg-spinner Samuel Badree (3-14) spearheading the attack and ploughing through Afghanistan's top order.
But Najibullah Zadran, batting at number six, smashed an unbeaten 48 off 40 balls, to guide Afghanistan to a respectable 123-7.
Afghanistan then held their nerve to overcome the West Indies whose run chase got off to a shaky start when Evin Lewis - in for the rested Chris Gayle - was out for a duck in the third over.
Andre Fletcher retired hurt with a hamstring twinge but was forced to return late in the game as Afghanistan's spinners led by 17-year-old Rashid Khan (2-26) kept the Windies wickets tumbling.
With the West Indies needing 10 runs from the final over, Najibullah sprinted several metres on the boundary to take a spectacular, tumbling catch and claim Carlos Braithwaite for 13, just when he looked like bringing the West Indies home.

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Australia
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Usman Khawaja c Dhoni b Nehra           26
Aaron Finch c Dhawan b Pandya           43
David Warner st Dhoni b Ashwin           6
Steve Smith c Dhoni b Singh              2
Glenn Maxwell b Bumrah                  31
Shane Watson not out                    18
James Faulkner c Kohli b Pandya         10
Peter Nevill not out                   10
Extras: (lb2, w11, nb1)                 14
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Total: (6 wickets, 20 overs)           160
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Did not bat: Adam Zampa, Nathan Coulter-Nile, Josh Hazlewood
Fall of wickets: 1-54 (Khawaja), 2-72 (Warner), 3-74 (Smith), 4-100 (Finch), 5-130 (Maxwell), 6-145 (Faulkner)
Bowling: Nehra 4-0-20-1, Bumrah 4-0-32-1, Ashwin, 2-0-31-1, Jadeja 3-0-20-0, Singh 3-0-19-1, Pandya 4-0-36-2

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India
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Rohit Sharma b Watson                   12
S Dhawan c Khawaja b Coulter-Nile       13
Virat Kohli not out                     82
Suresh Raina c Nevill b Watson          10
Yuvraj Singh c Watson b Faulkner        21
Mahendra Singh Dhoni not out            18
Extras: (lb3, w2)                        5
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Total: (4 wickets; 19.1 overs)         161
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Did not bat: Hardik Pandya, Ravindra Jadeja, Ravichandran Ashwin, Ashish Nehra, Jasprit Bumrah
Fall of wickets: 1-23 (Dhawan), 2-37 (Sharma), 3-49 (Raina), 4-94 (Singh)
Bowling: Hazlewood 4-0-38-0, Coulter-Nile 4-0-33-1, Watson 4-0-23-2, Faulkner 3.1-0-35-1, Maxwell 2-0-18-0, Zampa 2-0-11-0
Result: India win by six wickets
Toss: Australia
Umpires: Kumar Dharmasena (SRI), Marais Erasmus (RSA)
TV umpire: Richard Illingworth (ENG)
Match referee: Ranjan Madugalle (SRI)
Reserve umpire: Nigel Llong (ENG).