Castleford won the trophy by beating Leigh by the score of 8-5 The match was played at Headingley, Leeds, now in West Yorkshire.
The attendance was 9,716 and receipts were £2,099 This was the third of Castleford's three victories in successive seasons in the first three Floodlit competitions This season the original eight invitees plus the three "newcomers" from last season (Barrow, Rochdale Hornets and Salford) are joined by a further seven clubs.
These are Halifax, Huddersfield, Hull FC, Hull Kingston Rovers, Keighley, Wakefield Trinity and Wigan and bring the total of entrants up to eighteen.
This involved the introduction of a preliminary knock-out round on a knock-out basis, to reduce the numbers to sixteen, followed by a straightforward knock out competition.
The record attendance was 40,175 for a league match between Leeds and Bradford Northern on 21 May 1947.