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The 2006 Challenge Cup (also known as the Powergen Challenge Cup due to sponsorship from Powergen) was the 105th tournament played for rugby league's Challenge Cup. It features teams from across Europe including England, Scotland, Wales, France and Russia.
The competition started in January 2006 with the preliminary round where the Gloucestershire Warriors from the Rugby League Conference surprised an established Pennine League team in Illingworth. The final was scheduled to be played at the new Wembley Stadium but in March 2006 it became apparent that the stadium would not be ready for the final on 26 August so it was switched to Twickenham.
In the final St. Helens proved too strong for the Huddersfield Giants, winning by 42 points to 12. It was Huddersfield's first final since 1953, when they also faced St Helens.
Round 3 sees the introduction of the National League 1 and 2 teams and teams from France and Russia. Amateurs Thornhill Trojans provided the first surprise result by beating national 2 team Workington Town. Late season snow caused a number of postponements on the Sunday.
Round 4 sees the introduction of the Super League teams. Some matches are now televised live by the BBC. In this round the matches chosen for transmission were at Bradford and Wakefield.
In this round the matches chosen for transmission were at Hull KR and Leeds. Hull KR pulled off a major surprise when they beat Superleague team Warrington Wolves.
Unlike earlier rounds, matches from now on will be played on neutral grounds. Huddersfield have the chance to win the Cup for the first time in 1953 when they beat this year's final opponents St Helens.
The final was originally scheduled to be played at Wembley Stadium though because of the construction delay was alternatively held at Twickenham Stadium, London.