It was a thriller at Hull KR with Sheffield coming back before finally succumbing to a 34-24 loss late on in the game.
Salford travelled to Batley and showed little mercy as they ran out 4-66 winners, while Rochdale went out at Huddersfield with a respectful 38-12 score line.
Warrington also strolled into the Quarter Finals to set up an enticing game against Hull KR by beating Featherstone 8-56.
Brent Sherwin sent Castleford through into the Quarter-Finals in the Carnegie Challenge Cup with an extra-time drop goal – the first ever in the history of the trophy – which was slotted over from 40 metres out.
Halifax matched their West Yorkshire rivals toe-for-toe during the game, and at 30-22 looked to be out of it. But two converted tries from Bob Beswick put the away side in front, only to be pegged back with three minutes remaining by Sherwin’s try.
Castleford squared things up with Ryan McGoldrick scoring, but Halifax put their noses back in front again when Paterson added another penalty.
But Castleford showed their Super League class when Michael Shenton scored, and despite another Paterson penalty, the Tigers went in at half-time with a four point advantage thanks to James Evans‘ try.
The second half, however, exploded into life and Halifax were rocked inside two minutes of the restart when former Tiger Dwayne Barker scored to give ‘Fax a 16-12 lead.
And they were firmly in the ascendency when Beswick scored the first of his hat-trick after 47 minutes.
But Beswick’s late double equalled things up once more, and with minutes remaining Lee Paterson missed a drop goal attempt.
That sent the tie into ‘Golden Point’, and within the first set of six, Sherwin converted a drop goal attempt in style to send Terry Matterson’s men into the next round.
In the other tie today, Gateshead booked their place in the Challenge Cup Quarter-Finals for the first time in their history, overcoming Championship 1 side Oldham at Darlington’s Northern Echo Arena.
Thunder scored five second-half tries as Steve McCormack – his first game in charge of the club – saw his side win the game with ease as second-row Michael Knowles racked up a personal 14-point haul.
Oldham took a 6-0 lead after just twelve minutes, Tommy Goulden crossing. But Thunder hit back just after the midway point, Michael Knowles scoring Thunder’s first try, but he failed to convert his own effort.
And that was how the scoreline remained for the first half, but the game exploded into life in the second forty.
And despite a resilient fightback from the away side, Danny Halliwell and David Allen scoring tries, Gateshead booked their place against potential Super League opposition with Luke Branighan scoring his second try of the game.