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Wales' incredible victory over Italy has put them in pole position to win a third Six Nations title in four years, with matters now down to Ireland and England to reply if they are to have any say in winning the championship.
Needing to pile the points on against Italy, Wales looked to be down and out at half-time as they led by just one point at 14-13, but an incredible turnaround saw them run in 47 points through tries from Liam Williams, Rhys Webb, Scott Williams, Sam Warburton and a George North 10-minute hat-trick.
However, Ireland came out of the blocks like a scolded cat, with tries from Paul O'Connell, Jaryd Payne and a brace from Sean O'Brien sending them top of the table and end any Welsh hopes.
Show all 61 1 /61Six Nations 2015 in pictures Six Nations 2015 in pictures Scotland 10 Ireland 40 Jonathan Sexton began to crack under pressure before converting penalty to take Ireland ahead of Wales
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Six Nations 2015 in pictures Scotland 10 Ireland 40 Sean O'Brien touches down for his second try of the match
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Six Nations 2015 in pictures Scotland 10 Ireland 40 Sean O'Brien scores for Ireland
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Six Nations 2015 in pictures Scotland 10 Ireland 40 Paul O'Connell scores for Ireland
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Six Nations 2015 in pictures Italy 20 Wales 61 Liam Williams scores for Wales
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Six Nations 2015 in pictures Italy 20 Wales 61 George North scores for Wales
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Six Nations 2015 in pictures Italy 20 Wales 61 Jamie Roberts carries the ball for Wales
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Six Nations 2015 in pictures Italy 20 Wales 61 Italy sing the national anthem ahead of kick-off
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Six Nations 2015 in pictures Italy 0 France 29 France celebrate after Mathieu Bastareaud scores a try
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Six Nations 2015 in pictures Italy 0 France 29 Italy failed to score a single point in the disappointing defeat to France.
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Six Nations 2015 in pictures Italy 0 France 29 Yoann Maestri dives over the line for a try
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Six Nations 2015 in pictures England 25 Scotland 13 Chris Robshaw lifts the Calcutta Cup after beating Scotland
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Six Nations 2015 in pictures England 25 Scotland 13 George Ford scores his try in the 25-13 win over Scotland but England wasted many of the opportunities he created
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Six Nations 2015 in pictures England 25 Scotland 13 Mark Bennett scores a try to get Scotland back into the game.
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Six Nations 2015 in pictures England 25 Scotland 13 Jonathan Joseph of England breaks through the tackle from Stuart Hogg of Scotland to score the opening try
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Six Nations 2015 in pictures Wales 23 Ireland 16 Sam Warburton celebrates Wales' win over Ireland
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Six Nations 2015 in pictures Wales 23 Ireland 16 Samson Lee suffered an Achilles injury in the win over Ireland
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Six Nations 2015 in pictures Wales 23 Ireland 16 Ireland wing Tommy Bowe reacts after the first Wales try
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Six Nations 2015 in pictures Wales 23 Ireland 16 Scott Williams of Wales dives over for the opening try
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Six Nations 2015 in pictures Ireland 19 England 9 Robbie Henshaw crosses the line for Ireland
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Six Nations 2015 in pictures Ireland 19 England 9 The master Johnny Sexton gives the apprentice George Ford a lesson at fly half, epitomising Ireland's indomitable spirit and prowess.
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Six Nations 2015 in pictures Ireland 19 England 9 Jonathan Sexton scored 14 points to stretch Ireland's lead
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Six Nations 2015 in pictures France 13 Wales 20 Morgan Parra kept France in touch until they conceded a try
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Six Nations 2015 in pictures France 13 Wales 20 Dan Biggar touches down under the attentions of Brice Dulin for Wales' match-winning try
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Six Nations 2015 in pictures France 13 Wales 20 France look dejected after defeat to Wales
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Six Nations 2015 in pictures Scotland 19 Italy 22 Italy celebrate scoring their second try
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Six Nations 2015 in pictures Scotland 19 Italy 22 Josh Furno emerges with the ball after scoring a try for Italy
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Six Nations 2015 in pictures Scotland 19 Italy 22 Tommy Seymour evades the tackle of Enrico Bacchinof
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Six Nations 2015 in pictures Scotland 19 Italy 22 Mark Bennett runs in for an interception try
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Six Nations 2015 in pictures Scotland 23 Wales 26 Hogg sprints away from the flailing Welsh defence for the game's opening try
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Six Nations 2015 in pictures Scotland 23 Wales 26 Leigh Halfpenny was his usual metronomic self from the kicking tee as Wales game back into the game
Six Nations 2015 in pictures Scotland 23 Wales 26 Dan Biggar was upended by Scotland's Fin Russell, who was sent to the sin bin as a result
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Six Nations 2015 in pictures Scotland 23 Wales 26 Alex Cuthbert was tackled as Wales looked for a swift response
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Six Nations 2015 in pictures Scotland 23 Wales 26 Rhys Webb scored Wales' first try while Finn Russell was in the sin bin
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Six Nations 2015 in pictures Scotland 23 Wales 26 Jonathan Davies was sent to the sin bin before he popped up with Wales' second try
Six Nations 2015 in pictures Scotland 23 Wales 26 Liam Williams impressed as a replacement for the concussed George North
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Six Nations 2015 in pictures Scotland 23 Wales 26 Davies' solo try gave Wales an unassailable late lead
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Six Nations 2015 in pictures Scotland 23 Wales 26 Geoff Cross looks on dejected as Scotland contemplate yet another defeat to Wales
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Six Nations 2015 in pictures Ireland 18 France 11 Jonathan Sexton celebrates victory with Tommy Bowe
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Six Nations 2015 in pictures Ireland 18 France 11 Morgan Parra runs into Rory Kockott
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Six Nations 2015 in pictures Ireland 18 France 11 Jonathan Sexton bleeds from a cut during Ireland's 18-11 victory over France
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Six Nations 2015 in pictures England 47 Italy 17 Nick Easter waves to hae crowd after the victory, in which he scored England's sixth try
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Six Nations 2015 in pictures England 47 Italy 17 Danny Cipriani dives over the line to score a try
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Six Nations 2015 in pictures England 47 Italy 17 Jonathan Joseph scores his second try against Italy
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Six Nations 2015 in pictures England 47 Italy 17 George Kruis celebrates with Ben Youngs after scoring
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Six Nations 2015 in pictures England 47 Italy 17 Jonathan Joseph scores a try for England
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Six Nations 2015 in pictures England 47 Italy 17 Billy Vunipola scores for England
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Six Nations 2015 in pictures England 47 Italy 17 Mike Brown is knocked out after a collision with Andrea Masi
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Six Nations 2015 in pictures England 47 Italy 17 Sergio Parisse scores a try for Italy
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Six Nations 2015 in pictures France 15 Scotland 8 Dougie Fife scores a try for Scotland in the defeat to France
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Six Nations 2015 in pictures France 15 Scotland 8 Rory Kockott passes the ball under the attentions of Richie Gray
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Six Nations 2015 in pictures France 15 Scotland 8 Camille Lopez kicked France to victory as he scored 15 points with his boot
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Six Nations 2015 in pictures Italy 3 Ireland 26 Tommy O'Donnell fends off two defenders to run 40m and score for Ireland
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Six Nations 2015 in pictures Italy 3 Ireland 26 Ian Keatley in action for Ireland against Italy
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Six Nations 2015 in pictures Italy 3 Ireland 26 Conor Murray scored Ireland's first try
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Six Nations 2015 in pictures Wales 16 England 21 England captain Chris Robshaw celebrates the 21-16 victory over Wales
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Six Nations 2015 in pictures Wales 16 England 21 Billy Vunipola of England celebrates Dave Attwood's which was later ruled out after the TMO saw an obstruction from Nick Easter
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Six Nations 2015 in pictures Wales 16 England 21 George North was partly at fault for England's second try, scored by Jonathan Joseph, after he broke three tackles to score.
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Six Nations 2015 in pictures Wales 16 England 21 Anthony Watson (left) beats the Wales cover defence of Leight Halfpenny and Jonathan Davies to score England’s first try.
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Six Nations 2015 in pictures Wales 16 England 21 England had a clear advantage in the scrum that they used as the basis of their attack.
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Six Nations 2015 in pictures Wales 16 England 21 Wales’ Rhys Webb avoids an attempted tackle by England’s Jonny May as he heads over to score the opening try.
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The result means that the pressure is now on England to beat France, who had their hopes of winnin ghte title ended by Wales' victory.
The situation for England is that they need to beat France by 26 points to beat Ireland and end the four-year wait for Six Nations glory.
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