
where the last PUZZLE gives the winner
Sheldon's contact information.
The Big Bang Theory Season 9, Episode 8

Apparently, he's 12-down in
the TV Guide crossword PUZZLE.
The Big Bang Theory Season 7, Episode 19

"When you're doing a PUZZLE,
The Big Bang Theory Season 7, Episode 3

all of the different pieces
in a PUZZLE.
Westworld Season 3, Episode 8

missing
a piece of the PUZZLE.
Westworld Season 2, Episode 9