Andy Robinson insists Scotland will develop into a special side if they can only manage to get over "white line fever".

Saturday's 15-15 Calcutta Cup draw at Murrayfield was the third successive RBS 6 Nations match in which Robinson's men have bossed possession and territory but have come away without a victory.

It was also the fifth time in seven games under the new head coach in which Scotland have failed to score a try, an age-old riddle they appear no closer to solving.

But Robinson is adamant his players will eventually crack the code and become a force to be reckoned with every time they take the field.

"As long as we keep moving forward, there is a special side that can grow here," the 45-year-old said after watching yesterday's 15-15 draw.

"We are playing with real confidence but we have to sustain it.

"No-one is going to give you an easy score and you have to keep working hard.

"When we got close to the line, we got a bit of white line fever but that's the learning process and we will find it.

"I believe we can stand toe to toe against anybody just through the way we are trying to play but also the control we can get at set-piece and the control we can get at contact."

Panicking with the line in sight was one thing that cost Scotland dear yesterday but they - and to an extent England - were also let down by a referee who refused to make good on his threat to produce a yellow card.

"I think he could have been stronger - he should have been stronger," said Robinson of South African Marius Jonker, who was as reluctant to sin-bin players as he was hell-bent on penalising them in the first place.

Scotland captain Chris Cusiter was as bemused as his head coach at Jonker's performance.

He said: "I spoke to him at the time about it and he felt they (England) had responded well having given away a couple of penalties."

The scrum was also a shambles, with interminable resets disrupting the flow of an already-disjointed game that was predictably settled by the boot.

Despite their overall dominance, Scotland could have lost just as easily as they should have won, with Toby Flood failing to land a late penalty and drop-goal for the visitors.

Scrum-half Cusiter, who will become the first man for three years to captain Scotland to the wooden spoon if they lose in Ireland on Saturday, said: "It's a draw and it's a strange kind of result to digest.

"On the one hand, we're really disappointed not to have gone on and won it, which we certainly could have.

"But at the same time, they missed a late penalty and had a drop-goal charged down for them to have won."

He added: "This championship has had a lot of frustrations but I certainly think that we're heading in the right direction."