If you know the answer to the challenge, submit it here by Thursday, July 13th at 3 p.m. ET. Listeners whose answers are selected win a chance to play the on-air puzzle. Important: include a phone ...

Sunday Puzzle: Fill in the blank with these 'EE' and 'OO' words. On-air challenge: I'm going to read you some sentences with two words left out.The first missing word has a double-E. Change the ...

Fill won't actually be a contestant in the event, but anyone who beats it -- *if* anyone beats it -- will receive an "I Beat Dr. Fill" button from New York Times puzzle editor Will Shortz.