Wall to Wall

Pegatory Knockout (also known as Wall to Wall) is a recurring Survivor challenge.

Rules
The challenge features three rounds of elimination. In the first round, the castaways must dig until they find a wooden peg which they will use to navigate a maze. The first five to finish move on to the second stage of the challenge. In the second stage, the castaways will use four pegs to navigate a wall. The first three to finish move on to the final stage, where the first person to complete a sliding puzzle will win Immunity.

History
The challenge was first used in Survivor: Panama, where it did not feature round-by-round elimination and was used for the final Reward Challenge. The reward was a protein-enriched meal specifically made to nourish the winner for the Final Immunity Challenge. In this version, the castaways navigated a peg through a table maze to release two more pegs. After that, they would use a combination wheel to locate their final two pegs. They would then use the four pegs to navigate a climbing wall and once they reached the top, would use their four pegs to raise a flag. The first castaway to do this would win reward. Terry Deitz won the challenge, but despite winning the nourishment, he did not win the Final Immunity Challenge.

In Survivor: Heroes vs. Villains, the challenge was modified into a three-round elimination challenge, which retained the climbing wall and table maze from its initial appearance, and replaced the combination wheel and flag with a sliding puzzle. The first stage had the castaways digging for a peg to navigate through a table maze where they would smash a tile after making their way through it, with the first five moving on. Rupert Boneham, Sandra Diaz-Twine, Russell Hantz, Parvati Shallow and Danielle DiLorenzo all advanced to the next stage. The second stage had the remaining five castaways use four pegs to climb a wall, with the first three reaching the top. Russell, Rupert and Parvati all made it to the final round. The final stage featured a sliding puzzle and the first castaway to complete it would win Immunity. Russell beat out Rupert to win immunity.

The Challenge was used in Survivor: Redemption Island as a duel between Matthew Elrod, Mike Chiesl, Ralph Kiser and Andrea Boehlke. After completing the table maze, the castaways use the handle to smash a tile. Under the tile was a bag of puzzle pieces, which they must put together. Last person who's puzzle incomplete in out of the game. Ralph was the first to complete the table maze. However, he fumbled on second puzzle. This allowed the others to finish and permanently eliminating Ralph from the competition.

Trivia

 * Danielle DiLorenzo is the only castaway to compete in this challenge twice.
 * This is the first challenge to be used as a Reward Challenge in a season finale.
 * This is the only challenge to be used as a Reward Challenge with three castaways remaining.
 * All three times this challenge was used, it was post-merge in a season with a black merged tribe.