How do I remove one badly designed Solitaire game I installed?

I installed a game called Solitaire on Xubuntu, but this game is very badly designed, so I decided to remove it.

Here is some useful info:

1. I installed this game using Software on Xubuntu, but the game is not found under the tab Installed.
2. I tried using Ubuntu software center, but still unable to find the game under the installed tab.
3. Using Synaptic Package Manager cannot locate the package of the game.

App icon:

App screenshot:

You can search "solitaire" on the "software" application of xubuntu, then you will find the game uploaded with the same icon as I have. Maybe you can successfully uninstall it.

Update

Output of snap list:

core        16-2.26.14        2462        canonical        - 
solitaire   1.0               2           1bsyl            -