A missing masterpiece. A celebration on the line.It's Cinco de Mayo, and the Cozy Chess Club and all of the school is ready to celebrate-until disaster strikes. The first graders' beautiful Heroes of Mexico display has vanished, leaving twenty-five little artists in tears. With the big event just hours away, can the chess club detectives crack the case in time?As the friends follow clues through the school, they discover that nothing is what it seems-spooky noises in the halls, a frazzled student council president, and a classmate who is acting very suspiciously. Carlos even calls on a bit of magic he learned from his beloved grandfather in Mexico to help solve the mystery.Using the logical thinking they've learned from chess, the Cozy Chess Club must piece together the puzzle before time runs out. Along the way, they learn that even prickly people can surprise you-and that teamwork can turn any challenge into a victory.Featuring the Mexican Defense chess opening, fun vocabulary words, and a celebration of Mexican culture and history, this fourth installment in the Cozy Chess Club Mysteries is perfect chapter book for young readers who love puzzles, friendship, and a dash of magic.