"yes" then the act goes through to the next stage, otherwise, they are sent home. Boot camp and judges' houses In the first two seasons, The contestants selected at the auditions were further refined through a series of performances at "boot camp", and then at the "judges' houses", until a small number eventually progressed to the live finals (seventeen in season 1, and sixteen in season 2). At boot camp, the judges collaboratively chose a small number of acts (32 in season 1 with eight in each category; 24 in season 2 with six in each category) for the next round, "judges' houses". The producers then assigned each of the judges a category to mentor, and the judges split up for the "judges' houses" round, in which each of them hosted the contestants in their assigned category at a luxurious residence, often scattered around the globe. The houses the contestants visited did not in every case actually belong to the judges, some were rented for the occasion. The contestants did not know who their mentor would be until they arrived at that judge's house. During this round, each judge held another round of auditions on location, and then further reduced the number of acts with the help of a celebrity guest. In season three, these stages of the competition are being replaced by a new stage called "The Six-Chair Challenge", first introduced in the Dutch version of the series. Live shows The selected finalists (either 16 or 17 acts) move into shared accommodation at the Hollywood Hills to take part in the show. The mansion is also notably used for housing the finalists from American Idol. The finals consist of a series of two live shows, the first featuring the contestants' performances and the second revealing the results of the public voting, culminating in one or more acts being eliminated. Celebrity guest performers also feature regularly. These live shows are filmed at CBS Television City in Los Angeles, California. The performance shows were broadcast on Wednesday nights and the results show on Thursday nights. In season one, seventeen acts were put through to the live shows, and sixteen acts were put through in season two. In addition to the live broadcast on Fox, Sony and SYCOtv created a completely integrated second-screen experience and a Pepsi sponsored live digital pre-show known as The X Factor Digital Experience. In addition to watching