Mega Database 2025
The is the primary reference database for professional chess players, currently containing over 11 million games from 1475 to 2024. The "Updates 1–11" refers to the initial batch of weekly data packages released through the Mega Update Service 2025 , which delivers approximately 5,000 new games every week. Content Highlights: Updates 1–11
Understanding the “Both Formats” Release
PGN import is extremely slow
- Megabase2025/
Current and Relevant Data
: The regular updates ensure that the database stays current, reflecting the latest developments in chess theory and practice. This is particularly important for competitive players who need to stay abreast of new trends and strategies.