This document discusses chess opening theory and provides examples of quick checkmates. It gives a two-step mate where white plays f3 and black responds with e5, then white foolishly plays g4 allowing black to quickly checkmate with Qh4. A four-step mate is also shown where white plays e4 and black e5, then white tries Qh5 but black defends with Nc6, then white cleverly plays Bc4 threatening mate, but black blunders with Nf6 allowing white to checkmate with Qxf7.