NPR's Ayesha Rascoe plays the puzzle with listener, Karen Brock, and puzzlemaster, Will Shortz. Sunday Puzzle: Palindrome Zone On-air challenge: Every answer today is a 7-letter palindrome in two ...

If you know the answer to the challenge, submit it here by Thursday, May 4th at 3 p.m. ET. Listeners whose answers are selected win a chance to play the on-air puzzle ...