
But we haven't
finished the PUZZLE.
The Big Bang Theory Season 7, Episode 3

And that was the last face needed
to complete the jigsaw PUZZLE
Money Heist Season 1, Episode 8

Your next PUZZLE is a riddle.
The Big Bang Theory Season 7, Episode 3

each PUZZLE will lead you
The Big Bang Theory Season 7, Episode 3

Not the cube, but the PUZZLE of
why I couldn't solve the cube.
The Big Bang Theory Season 12, Episode 19