Mark Allen beats Judd Trump to make UK Championship last eight Northern Ireland's Mark Allen booked his place in the UK Championship quarter-finals by coming from behind to beat Judd Trump 6-4 in the last 16. Allen lost the opening two frames and trailed 3-1 at the interval, then 4-2, but won the last four frames to secure an unlikely victory. The world number nine from Antrim will play Ricky Walden on Thursday night. I was very, very lucky there - I couldn't have played any worse. Judd gave me so many chances," said Allen. Trump took the opening frame on Wednesday afternoon, with the help of a break of 86, and soon made it 2-0 as his opponent struggled to find his form. A break of 98 saw Allen reduce his arrears but the Englishman took the next to enjoy a two-frame advantage mid-session. Allen won the next, but the world number four made it 4-2. Allen, the 2011 UK finalist, ensured his success by taking the next four frames, including a break of 69 in the 11th frame. "I was very nervous and edgy before I went out, really shaking, which was strange," admitted Allen. I never settled and the match was a comedy of errors. I don't know how I won the game. Judd should have had me dead and buried. I never gave up though and a fluke in the final frame helped. You never know what can happen in this game. Walden, who saw off Ding Junhui 6-4, lost to Allen at the last four stage two years ago. Allen had started his UK challenge with a 6-1 victory over Jak Jones of Wales, followed by a 6-2 success over Dave Harold of Stoke. He then defeated Michael Holt 6-5 to set up the meeting with Trump.