The X Factor coach Paulina Rubio selected her final four artists to represent the "Boys" category in the live shows during Wednesday night's broadcast of the third season's new Four Chair Challenge Round.

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Paulina advanced Josh Levi, a 15-year-old from Houston, TX; Tim Olstad, a 24-year-old from Winona, MN; Carlito Olivero, a 24-year-old from Chicago, IL; and Carlos Guevara, a 16-year-old from Lexington, SC to The X Factor's live shows.

In the Four Chair Challenge, dubbed "a cross between Musical Chairs and a Roman Coliseum" by The X Factor creator and mentor Simon Cowell, a category's artists perform one at a time on an "X"-shaped stage, and the category's mentor must choose whether to give each singer a temporary seat on the stage or immediately send him or her home.

As the Four Chair Challenge progresses, the mentors must decide whether to replace one of their already-seated acts with a subsequent new act -- or eliminate that act entirely. Once all of a category's artists perform, the last four people sitting in the chairs ultimately survived the cut.

Wednesday night's broadcast featured Paulina telling her acts to take a seat one at a time or sending them home. 

Al Calderon, a 19-year-old from Holbrook, NY took the stage first and Paulina chose to give him a seat.

Isaiah Alston, a 15-year-old from Hamilton, NJ, sang next followed by Isaac Tauaefa, a 23-year-old from Corinth, TX, but Paulina unfortunately send both artists home immediately.

Carlos, Stone Martin, a 14-year-old from Hartsville, SC, and Chase Goehring, a 17-year-old from Nolensville, TN, then performed one after the other. Paulina chose to give them all a seat on the stage.

Tim O. was up next. After performing, Paulina chose to give him a seat over Stone -- therefore sending Stone home.

Carlito then took the stage, after which Paulina told him to take a seat and replace Chase.

Afterward, Timmy Thames, a 13-year-old from Malibu, CA, performed. Paulina gave him a seat and ultimately eliminated Tim O.

After the crowd screamed in disapproval and Paulina's fellow mentors, especially Kelly Rowland, looked horrified at her decision, Paulina decided to change her mind and bring Tim O. back. Tim O. was shocked and relieved, as he replaced Al.
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Lastly, Josh performed. Paulina wanted him in the "Boys" final four, so she sent Timmy home and gave him a seat on the stage.

Now that Paulina, Kelly and fellow mentor Demi Lovato's final four have been determined, tonight's The X Factor broadcast will pick up where last night's episode had left off -- with Simon Cowell weeding out his "Groups" category of acts.

Simon already chose to give Girls United, Wild Thingz, Glamour, and Restless Road a seat on the stage. Six more acts still have to perform for the audience.

Glamour is comprised of Alexis Cambridge, a 12-year-old from Atlanta, GA; Moriah Gaither, a 13-year-old from Atlanta, GA; and Kaylan Montgomery, a 13-year-old from Atlanta, GA.

Wild Thingz is a duo: Barnaby Kupper, a 22-year-old from Los Angeles, CA, and "Vice," a 31-year-old from Harbor City, CA.

Girls United features the following artists: Alexandra Segal, a 23-year-old from Los Angeles, CA; Nichole Cordova, a 24-year-old from Houston, TX; and Candice Craig, a 24-year-old from Miami, FL.

Restless Road, a country group Simon put together, is comprised of Colton Pack, an 18-year-old from Danese, WV; Zach Beeken, an 18-year-old from Indiana, PA; and Andrew Scholz, a 19-year-old from Summerville, SC.
 
After tonight's broadcast, only 16 acts will remain. The X Factor's first third-season live show will then air on Tuesday, October 29 and feature four acts in each category performing.