challenge
- German / Deutsch
- Herausforderung
- American English / American English
- Challenge
- French / Français
- Défi
- Polish / Polski
- Wyzwanie
- Italian / Italiano
- Problema
- Chinese / 中國
- 挑战
- Spanish / Español
- Desafío
- Turkish / Türk
- Zorlu iş
- Russian / Pусский
- требование