By the Numbers

By the Numbers (also known as Plank Race) is a recurring challenge in Survivor that demands teamwork and delicate balance.
==Rules==
The members of each tribe line up on a very narrow balance beam. One tribe member at a time, they must move across the beam and around the other tribe members. The person crossing can only touch one member at a time. If two people touch at once or a member falls into the water, they must start all over. Once a member reaches the platform, the next person may proceed. The tribe who gets all their members across first wins.
==History==
=== United States ===
The challenge debuted in as the season's first Reward Challenge. The Yasur tribe was able to easily defeat the Lopevi tribe and win the challenge, earning themselves blankets and pillows.
In , Moto and Ravu competed in this challenge for reward. Despite originally trailing, Moto developed a strategy which involved having the member kneel down, allowing them to cross with relative ease. This would allow Moto to pull off a victory and earn fish, rice, spices, and a king-sized bed with sheets, pillows, and blankets. This is the only season where the challenge was administered to tribes with both male and female members.
The next time the challenge was used was in for immunity. While the Manono tribe made decent progress, the Salani tribe had communication problems early on, which were aggravated by Kat Edorsson unnecessarily jumping into the water. By the time Monica Culpepper was able to come up with a plan to get the women across, the Manono tribe won immunity.
=== Australia ===
=== France ===
=== Russia (Unofficial) ===
In Serdtse Afriki, the challenge was used for immunity. Despite their initial lead, the Sand tribe lost because Natalia Nikolaeva couldn't get across the balance beam, and the River tribe won immunity for the first time.
=== South Africa ===
In , the challenge was used for tribal reward. Also at the challenge, one Hidden Immunity Idol was hidden on each tribe's finish platform; Werner Joubert grabbed Mindanao's idol, while Chané Mynhardt took 's idol. Luzon handily won the challenge, getting all their members across before Mindanao managed to get a single member across. They received comfort items as their reward.
==Winners==
<tabber>United States=
Episode	Challenge Type 	Winners
 	Tribal Reward 	
 	Tribal Reward 	
 	Tribal Immunity	
|-|Australia=
Episode 	Challenge Type	Winners
Episode 6	Tribal Reward 	
|-|France=
Episode 	Challenge Type 	Winners
Episode 7	Tribal Reward 	
Episode 2	Tribal Immunity	
Episode 3	Tribal Immunity	
Episode 3	Tribal Reward 	
Episode 2	Tribal Reward 	
Episode 6	Tribal Reward 	
|-|Russia (Unofficial)={| class="wikitable" style="margin:auto; text-align:center; font-size: 8pt; line-height:18px;"
! Episode
! Challenge Type
! Winners
|-
| Serdtse AfrikiEpisode 4
| Tribal Immunity
|
|}
|-|South Africa=
Episode 	Challenge Type	Winners
Episode 3	Tribal Reward 	
</tabber>
==Gallery==
<tabber>United States=
Bubba rwrd chllng.jpg|Travis and John K. having a hard time ().
by the numbers ami and mia.png|Ami and Mia compete for Yasur (Vanuatu).
RavuBythenumber.jpg|Ravu trying the challenge in .
by the numbers one world.jpg|The challenge as seen in .
|-|Australia=
AU2017-Ep6-RewardChallenge.jpg|Asaga and Samatau compete for reward in .
AU2017-Ep6-AsagaReward.jpg|Ben and Jericho at the challenge. (2017)
AU2017-Ep6-SamatauReward.jpg|Samatau celebrating their win. (2017)
|-|France=
Kls3.ep7.jpg|The challenge in .
KLS12 Ep2 By the Numbers.jpg|The challenge in .
KLS17 Ep3 By the Numbers.png|Tinggi competing in .
KLS19 Ep3 By the Numbers.png|Naga competing in .
KLS24 Ep2 By the Numbers.png|Lawaki competing in .
Kls28.EP6.png|The challenge in .
|-|Russia (Unofficial)=
Sand fourth immunity challenge.png|Sand competing for immunity in Serdtse Afriki.
</tabber>
==Trivia==
* This challenge has been used in two seasons with the Battle of the Sexes format.
* Every tribe to win this challenge shares several similarities:
** Every tribe had nine members at the time.
** Every tribe had to sit out people to accommodate the other tribe, one of whom was the oldest contestant of the season.
** Every tribe had not lost a challenge up to that point.
==References==
Category:Survivor (U.S.)
Category:Australian Survivor
Category:Koh-Lanta
Category:Unofficial Editions
Category:Challenges
Category:Recurring Challenges
Category:Survivor: Vanuatu
Category:Vanuatu Challenges
Category:Survivor: Fiji
Category:Fiji Challenges
Category:Survivor: One World
Category:One World Challenges
Category:Australian Survivor (2017)
Category:Australian Survivor (2017) Challenges
Category:Koh-Lanta: Bocas del Toro
Category:Koh-Lanta: Viêtnam
Category:Koh-Lanta: Johor
Category:Koh-Lanta: L'Île au Trésor
Category:Koh-Lanta: L'Île des Héros
Category:Koh-Lanta: Le Totem Maudit
Category:Serdtse Afriki
Category:Serdtse Afriki Challenges