This week's Riddler Classic is about Lotera, also known as Mexican bingo! A thousand people are playing Lotera, also known as Mexican bingo. The game consists of a deck of 54 cards, each with a unique picture. Each player has a board with 16 of the 54 pictures, arranged in a 4-by-4 grid.

Their versions of the game are played the same way Clemente's Lotera is played. Friends, family or even complete strangers pick a tabla (board) containing 16

printed out on a 44 grid. An announcer holds on to a deck of cards, each containing one of 54

.