By using your browser's site-blocking tools or extensions (such as BlockSite), you can prevent access to Google Solitaire. Simply add "solitaire.google.com" to your block list. Alternatively, if you enable SafeSearch/Family Link on Android, you will be able to block not only apps but also certain websites. In addition, if you insert the domain name into the parental control filter of your router, none of the devices that are connected to your network will be able to access that site.