The game statistics were introduced only with KubiSolitaire version 2021.01. If you still have games archived that were created before the statistics were introduced, you can include them from the archive as follows:

•  Press this button on the app bar of the game view to show the list of secondary commands. On a PC, you can use the menu of the title bar alternatively. This menu is more detailed than that of the app bar, so you can reach almost all the panes directly.

• Select the command: Manage game files.
   
• The game files pane comes into view. It shows the name, the comment, and the saved status of the current game.
   
•  Click this button to go to next pane. Alternatively, you may press the key combination Alt+Right arrow.
   
• The games archive pane comes into view. It shows the game files in the archive folder sorted by descending file names.
   
•  Click this button to display the list of secondary commands.
   
• Select the "Update statistics" command.
   
• The statistics pane is displayed and the update process is started. The process checks all archived files to see if they contain statistics data. If not, they will be generated, the respective game file will be updated, and the generated statistics data will be included in the current game statistics.
   
• After the process is completed, the updated statistics will be displayed.