Goalkeeper Craig Gordon says there is "no way" Scotland are giving up on Euro 2016 qualification.
Gordon Strachan's men failed to pick up points against Georgia and Germany in the recent Group D double-header.
To reach the play-offs, Scotland need to take at least four points against Poland and Gibraltar next month and hope other results go their way.
"Even if we get four points I think that still asks questions," said the 43-time-capped goalkeeper.
"We go in looking to win the [Poland] game, do our bit and get six points to put ourselves in a strong position," added the 32-year-old.
"We have the couple of big games to take part in.
"There's still a possibility there so no way we are giving this up."
If Scotland do get four points and Republic of Ireland lose to both Germany and Poland, Strachan's side will claim the play-off berth.
Another possible scenario is the Irish qualifying automatically with current group leaders and world champions Germany and Scotland pipping Poland to third place and the play-off. For this, the Scots would need two wins and for Poland to lose to Ireland.
"They [Republic of Ireland] got a point from Germany, it didn't look like they would," Celtic's Gordon said. "They've got a great fighting spirit, they always work very well as a team and they are very difficult to beat.
"And they don't tend to give away an awful lot of goals so they are always in matches no matter who they are playing.
"They are capable of going and taking it our of our hands, but that's up to them. We have to concentrate on what we can do and put the pressure on as much as possible."
Gordon, whose last two Scotland appearances have been in friendlies, admits it is difficult not to let his mind drift to international duty but says focussing on getting regular games will help keep him sharp.
"It is on the horizon," he said. "We came back from the Scotland squad last time with seven Celtic games before we meet up again.
"So you set your goals for those seven games and that's what I've done to make sure I'm as well prepared as I can be going into those."