Matchmaker

Matchmaker (also known as The Mixer) is a recurring reward challenge. The game is similar to Concentration, in that it requires memory, but introduces the additional element of information management in interactions with the opposite tribe.

Rules
Everyone is given a box with a certain number of select items. One at a time, each castaway will ask someone on either tribe for a certain item. If the person asked have the item, they score a point for their tribe. The tribe with most matches win. In, once someone's box is empty, that person is out of the game.

History
The challenge debuted in  as a reward challenge for various toiletries. Every box had 5 items (35 pairs) meaning the tribe that reaches 18 wins. Joanna Ward started things off by asking Dave Johnson for a pumice stone, which he didn't have. Daniel Lue scored the first point when he asked Shawna Mitchell for soap. Tambaqui had a initial lead over Jaburu. Jaburu gradually was able to catch up and eventually surpass Tambaqui when Daniel asked Heidi Strobel for something which Rob Cesternino had already asked for. In the end, Dave asked Christy Smith for shampoo, but she did not have it, allowing Jeanne Hebert to score the winning point for Jaburu. The final score was 18-14.

The challenge was reused in  for reward. This time, the boxes had four items in them. Susan Hawk and Big Tom Buchanan sat out for Chapera, while Colby Donaldson sat out for Mogo Mogo. Boston Rob Mariano was first and asked Ethan Zohn for a rock. When he did not have one, Richard Hatch scored the first point of the game by asking Boston Rob for the same thing. Surprisingly, many subsequent guesses scoring points on the first try, leaving Jeff Probst amazed. Kathy Vavrick-O'Brien said that "No food makes you psychic" while Ethan told Jeff to make the boxes thicker. This ended when Lex van den Berghe guessed wrong about Jenna Lewis having a feather, which Alicia Calaway used to her benefit. Eventully, Alicia won the game when acquiring Jerri Manthey's seed, winning a the final piece of the map to a hidden rice deposit and a bathroom for Chapera. Saboga placed second, receiving a piece of a map to a rice deposit. The final score was 9-8-5.

Trivia

 * Rob Cesternino is the only contestant to compete in this challenge twice.