Scotland claimed a well-deserved 27-22 win over Ireland in a spectacular display of running rugby at Murrayfield.
Greig Laidlaw secured his side the win after a spirited Irish fightback, with two penalties in the last ten minutes of the match.
Ireland were down 21-8 at half-time but, after they regathered, orchestrated a stunning comeback and scored some well-worked tries through Paddy Jackson and Iain Henderson. Scotland looked spooked by their opposition's rejuvenation but were able to steel themselves and retake the lead.
The win sees Scotland top the Six Nations points table with four points with two other games still to play, while Ireland walk away with one point for being within less than seven points from the winners after the new law changes.
Set-pieces were a problem for both sides throughout the game with Scotland conceding three penalties at scrum time in just the first 20 minutes, while Ireland were never confident that they would get their own ball back at the lineout.
It was a nail-biter from start to finish as both sides played free-flowing, positive rugby that saw some electric tries being scored.
Scotland started off the game in a spirited fashion as they made it clear that they had left their conservative approach to the game behind them as they spread the ball to winger Sean Maitland twice in the first seven minutes.
The Scottish scrum was not up to scratch in the early stages but their loose play was fantastic and rumbled down field through some piercing runs until they landed just before the Ireland tryline, unable to cross due to some sturdy Irish defence. Vern Cotter's men then spread the ball wide to Stuart Hogg who dodged a tackle before scoring the first points of the game and Greig Laidlaw secured the conversion.
Ireland then hit back quickly, after a barnstorming run from Sean O'Brien which took them right to the Scotland five-metre line. The visitors were awarded a penalty and went for the line and used their position to launch a maul but couldn't quite get over for the try-line and Scotland were awarded a scrum.
Hogg then scored his second try of the match when the home side made a break from the halfway line which saw the full-back get possession in space with Sean Maitland outside him who looked like the eventual receiver. Hogg then faked a pass to Maitland and Rob Kearney took the bait and Hogg went through to score a fantastic try. After the conversion Scotland led 14-0, 24 minutes in.
After some serious pressure from Ireland they found themselves on the Scotland five-metre line. They tried to barge over but the Scotland defence remained impregnable which forced them to send the ball wide which saw Keith Earls go over in the corner. Jackson missed the conversion.
Scotland then hit back immediately when they had a line out on the Irish five-metre line and pulled off a devilishly cheeky move which saw Alex Dunbar stand in the lineout. Ross Ford then threw short to Dunbar who accelerated quickly to score his side's third try over the game.
With half-time looming, the bewildered Irish seemed desperate for some points, and when awarded a penalty they opted to go for poles, which Jackson knocked over.
At half-time, Scotland looked very much in control of the game as they led 21-8 after playing some electrifying running rugby, leaving the Irish completely stunned.
Ireland were clearly given a stern talking to in the dressing room as they started the second half with a new found sense of zeal. They scored the first points of the half when they pushed upfield through their forwards and after variety of different advantages given by referee Romain Poite, Henderson pushed over the line to score his side's second try.
The scoreboard might have stopped ticking for the period after Henderson's try but the spectacle on the field was nothing less than jaw-dropping as both teams expertly used the width of the pitch to their advantage as they spread the ball wide, each attempting to scatter their opposition's defensive structures.
Ireland almost scored again through Earls after O'Brien made a devastating break before offloading which would eventually end with Kearney being tackled out just before making the pass to Earls.
An Irish revival was on the cards when the visitors used the ball brilliantly to confuse the Scottish defence before Jackson scored his side's third try of the match, putting them ahead by one point after the conversion.
With ten minutes left to play Ireland looked as though they might retain their lead until a high tackle on Dunbar in the Irish 22 which lead to Scotland kicking for the line and starting a lineout maul which led to them being given a penalty which Laidlaw expertly knocked over to secure the win.
The scorers:
For Scotland:
Tries: Hogg 2, Dunbar
Cons: Laidlaw 3
Pens: Laidlaw 2
For Ireland:
Tries: Earls, Henderson, Jackson
Cons: Jackson 2
Pen: Jackson
Scotland: 15 Stuart Hogg, 14 Sean Maitland, 13 Huw Jones, 12 Alex Dunbar, 11 Tommy Seymour, 10 Finn Russell, 9 Greig Laidlaw (c), 8 Josh Strauss, 7 Hamish Watson, 6 Ryan Wilson, 5 Jonny Gray, 4 Richie Gray, 3 Zander Fagerson, 2 Fraser Brown, 1 Allan Dell
Replacements: 16 Ross Ford, 17 Gordon Reid, 18 Simon Berghan, 19 Tim Swinson, 20 John Barclay, 21 Ali Price, 22 Duncan Weir, 23 Mark Bennett
Ireland: 15 Rob Kearney, 14 Keith Earls, 13 Garry Ringrose, 12 Robbie Henshaw, 11 Simon Zebo, 10 Paddy Jackson, 9 Conor Murray, 8 Jamie Heaslip, 7 Sean O'Brien, 6 CJ Stander, 5 Devin Toner, 4 Iain Henderson, 3 Tadgh Furlong, 2 Rory Best (c), 1 Jack McGrath
Replacements: 16 Niall Scannell, 17 Cian Healy, 18 John Ryan, 19 Ultan Dillane, 20 Josh van der Flier, 21 Kieran Marmion, 22 Ian Keatley, 23 Tommy Bowe
Referee: Romain Poite (France)
Assistant Referees: Jaco Peyper (South Africa), Nick Briant (New Zealand)
TMO: Glenn Newman (New Zealand)
It has been a sensational year for the English team after going 13 games unbeaten, claiming victories over all the Six Nations sides and three of the Rugby Championship teams. It is England's first year since 1992 that they haven't lost a single game to make it a perfect season.
The result means the All Blacks finish 2016 with just one defeat, while France failed to make amends for their narrow loss to Australia last week despite playing very well against the World Champions.
For Wales this will go down as a satisfactory win and their third victory of the November Test window. It was only their third ever victory over South Africa and their second successive win over the Boks in Cardiff.
The result is a momentous one for the home side as it means they are the first Northern Hemisphere side, since England in 2003, to beat the Southern Hemisphere's traditional powerhouses of New Zealand, Australia and South Africa in the same calendar year.
It is great result for Scotland who finish off their November Series with two wins from three games, and their only loss came at the hands of Australia who could only beat Scotland by one point.
Fiji finally got a win this series after taking heavy losses against the Barbarians and then England.
Takulua was his side's hero as he finished with a 14-point haul, thanks to four penalties and a conversion, although the Azzurri outscored the Pacific islanders by two tries to two.
Canada outscored Samoa by three tries to one, including a double for in-form wing DTH van der Merwe, but the boot of Leuila, on his first start for his country, proved to be the difference.
Both sides crossed for a try apiece but it was the accurate goalkicking of replacement back Romain Lonca, who finished with an 11-point haul courtesy of three penalties and a conversion, which helped the Barbarians secure victory.
A penalty try and crossings from Bernard Foley and Tevita Kuridrani saw them end with the win, with Foley kicking 10 points on Saturday.
It was always going to be a tough ask to beat the All Blacks twice in three weekends and even though they couldn't pull it off, Ireland should still feel pleased with their performance against the world champions.
The result was in the balance right until the end when Greig Laidlaw secured victory for the home side via a penalty with the final act of this Test, after Juan Manuel Leguizamon was penalised for an illegal tackle on Ross Ford.
Canada led early on thanks to a penalty from scrum-half Gordon McRorie but on five minutes Florin Vlaicu responded to level in Bucharest.
It looked like the Brave Blossoms had snatched a draw when Yu Tamura converted Amanaki Lotoahea's 74th minute try, but Wales went down the other end of the field, with Davies showing composure to slot the three points.
The win means that England have now gone 11 games unbeaten and have won every game under Eddie Jones. Fiji who were trying make up for a 40-7 clobbering at the hands of the Barbarians last weekend continue their losing run.
So, this is what rock bottom looks like. Or perhaps the Springboks were already there and didn't realise it. South Africa's downward spiral is now complete. Allister Coetzee must fear for his job.
As the scoreline suggests, this was a tight contest and the home side's forwards deserve plenty of credit for the result as they laid the platform to victory with a dominant display in the tight exchanges.
Chiefs wing James Lowe was a double try scorer for the touring side with back-to-back efforts for Colin Cooper's side, who raced out into a 26-3 lead.
It was a hard-fought win for the home side as the Canadians shocked the Irish with a perfectly timed interception from Canada winger DTH van der Merwe and a roll over try from Taylor Paris to make the 14-14 half an hour into the game.
The home side dominated for large periods and should have won this match by a much bigger margin, but they made several mistakes and were lucky to secure victory in the end.
Les Bleus scored seven tries to Samoa's one to extend their unbeaten run over the Island nation after three previous meetings all ending in a French triumph.
In an entertaining and hard-fought encounter, the home side dominated for large periods against a Wallaby side who battled to get going and committed a plethora of errors on attack before a late Tevita Kuridrani try, which Bernard Foley converted, secured them the result.
Pat Lambie’s boot opened up an early 6-0 lead for the Springboks, however as the minutes ticked over England grew stronger, leading 20-9 at half-time thanks to tries from Jonny May and Courtney Lawes combined with the boots of Owen Farrell and Elliot Daly.