Bishop to queen four,
The Big Bang Theory Season 5, Episode 23
My catapult flings my BISHOP...
The Big Bang Theory Season 4, Episode 22
...Leonard's queen's BISHOP
five-and-a-third.
The Big Bang Theory Season 4, Episode 22
knight takes BISHOP.
The Big Bang Theory Season 5, Episode 23
Knight to Queen's Bishop 5.
The Big Bang Theory Season 2, Episode 18