Sheldon: Uh, do you know how I solved the balanced center combat-area problem? Five words, transitional quadrilateral to triangular tessellation.
Leonard: That's brilliant.
Sheldon: It's what I do. But wait, there's more. I also invented two new chess pieces. The serpent and the old woman.
Leonard: Okay, now I have to ask. What do they do?
Sheldon: When the serpent slithers to an opposing player's piece, that piece is considered poisoned and will die after two more moves. Ugh.
Leonard: All right.
Sheldon: Unless, it gets to the old woman in time, in which case she sucks out the poison, turning her into the Grand Empress, a piece combining the power of the knight, queen and serpent.
Sheldon: That's because it's simple.