Celtic fought back from two goals down to claim a 2-2 draw against Scottish Premiership leaders Inverness in an entertaining tussle at Parkhead.
The Highlanders raced into the lead thanks to goals from Aaron Doran and Richie Foran, before being pegged back by Charlie Mulgrew and Adam Matthews.
Neil Lennon's men must now stage another comeback and overcome another two-goal deficit to rescue their Champions League play-off when Shakhter Karagandy come calling on Wednesday.
Celtic made no fewer than six changes from the side who suffered the shock loss to the Kazakhstan champions in midweek for the visit of table-topping Inverness.
Beram Kayal, Matthews, Efe Ambrose, Tony Watt, Amido Balde and Tom Rogic were all added to the side.
Joe Ledley, Steven Mouyokolo and Mikael Lustig were named on the bench and James Forrest, Kris Commons and Georgios Samaras, who were all injury doubts beforehand, were absent from the squad.
In contrast, Inverness named the same 11 players who defeated Motherwell last week for the long trip to Glasgow.
The visitors had an early chance to pile on the pressure when Billy McKay was fouled 25 yards out and Doran's resultant free-kick swerved just past the post.
At the other end, Matthews picked out Balde for a bullet header that was straight at Dean Brill and confidently claimed by the Caley Thistle goalkeeper.
David Raven then failed to clear a long punt from Kayal that fell kindly for Watt, but Brill came to the rescue again to block the point-blank shot.