 At the crossword tournament , Homer bets his money from his breakup business on Lisa and wins big . However , upon hearing Lisa saying that she is wary of the final round , he bets on the other finalist , Gil Gunderson . Gil plays Lisa for her sympathy and cons her into losing the round , which in turn lets Homer win his final bet . Upon realizing that Homer has come into some money by betting against her in the tournament , Lisa gets angry at him and refuses to acknowledge herself as Homer 's daughter , even going so far as to take Marge 's maiden name and start calling herself " Lisa Bouvier " . Feeling guilty , Homer commissions Merl Reagle and Will Shortz to create a special puzzle for the New York Times , with his apology to Lisa hidden in the clues and solution . The two of them make up , and Lisa is happy to call herself a Simpson again . 
