The Queen's Gambit is the chess opening that starts with the moves:
1. d4 d5
2. c4
It is one of the oldest openings and is still commonly played today. It is traditionally described as a gambit because White appears to sacrifice the c-pawn; however, this could be considered a misnomer as Black cannot retain the pawn without incurring a disadvantage.
Convert all the letters in the opening into numbers A=1, B=2... Y=25, Z=26 etc..
QUEENSGAMBIT = ABCDEFGHIJKL
The cache can be found at :-
N55 (C-D)(G-H). (B-L)(A-E)(J-H-H)
W001 (C-J)(F-A). (C-D)(E-I)(B-F)