Minimum: PC Intel i3 or i5 or Ryzen 3, 4 GB RAM, Windows 8.1 (32- or 64-Bit), DirectX11, graphic card with 512 MB RAM, DVD-ROM drive, Windows Media Player and internet access. Recommended: PC Intel i7, i9 or Ryzen 7/9, 8 GB RAM, Windows 11 or 10 with 64-Bit, Windows Media Player, graphic card with 1 GB RAM, RTX graphic card for real time Raytrace board, DVD-ROM drive and internet access. For ChessBase ACCOUNT: Internet access and up-to-date browser, e.g. Chrome, Safari. Runs on Windows, OS X, iOS, Android and Linux.