Although it's pretty simple and the graphics don't tell much, it's pretty good to create and simulate various chess problems.
It can create files ending in dxchess (*.dxchess) and read them so that you can save and load as many problems you want.
In the setup menu you can place the pieces and the right spots you want your problem have. You can also hide the right count and/or the wrong count. There is space to write the information of the exercise and you may type in how many correct answers the cup will been shown. After you prepare all these, you can name your program however you like and save it. The default and only save path is C:/images/
When you load a problem your role is only clicking spots. If you think you found the spot the exercise asked you for then by clicking it you'll realize if your choice was correct or wrong. If your choice was right, you'll hear a nice sound and the specific spot will become pressed. (if you select the same spot again that will be passed as wrong). If your choice was wrong then you will hear a negative beep and you will see a thump down picture for 2 seconds.
This is the very first version of the program, I may upgrade it if I encounter problems or want to add something more.