Clinical Wales led 15-6 at the break, tries from Josh Adams and Jonathan Davies putting Wales on course to make it four wins in four matches.Scotland dominated the second half but only had a Graham try to show for its superiority as Wales dug in with its backs to the wall to stand on the verge of a Grand Slam, with Ireland to come in Cardiff on the final weekend. Related News Six Nations 2019: Ireland captain Rory Best set to retire after RWC 2019 “The players had to handle some things that went against them, injuries early on and reshuffling the backline and players out of position, but we showed what we were made of in that second half in terms of the rugby we want to play and in our character.”We had enough pressure in the second half to win. Strong defenses will force errors, but we forced a lot of penalties out of Wales.”I think [there were] five in the 22 that should normally lead to yellow cards with that pressure, but obviously we are very frustrated that didn’t happen.” Townsend was encouraged by a much-improved performance from his side but was left to reflect on what might have been after Scotland suffered its third loss in a row.FULL TIME | A win for Wales. A compelling game of rugby comes to an end as the visitors secure a victory by 7 points. #AsOne pic.twitter.com/8GppgtfESQ— Scottish Rugby (@Scotlandteam) 9 March 2019″There is partly frustration but a lot of pride,” he told BBC Sport. “We gave a true picture of what we are capable of. Six Nations 2019: Wales edges Scotland to set up shot at Grand Slam Coach Gregor Townsend said there was “partly frustration but a lot of pride” for injury-hit Scotland after it was beaten 18-11 Saturday by Six Nations leader Wales at Murrayfield.Scotland lost its entire back three of Tommy Seymour, Blair Kinghorn and try-scorer Darcy Graham in a tight contest, with Stuart Hogg already missing.