ChessTempo has been one of the most trusted chess training platforms since 2007. Its tactics trainer is widely considered among the best available, with a large database of rated problems and a sophisticated rating system that accurately matches puzzle difficulty to player strength.

Beyond tactics, ChessTempo offers an opening trainer with spaced-repetition learning, an endgame practice module, a game database with millions of searchable master games, and a mixed mode that combines different training types in one session. The platform supports custom problem sets, detailed performance statistics, and error analysis to help players identify weaknesses.

The core tactics trainer and game database are free to use. A Gold or Platinum membership unlocks unlimited tactic attempts without ads, the opening trainer, endgame practice, and advanced statistics. ChessTempo is particularly valued by serious improvers who want data-driven feedback on their training.