The thing is getting more and more complicated...

I am considering to switch over to a 3,5" Nextion display. Much easier, preloaded images. Even a 12F could handle that! Still I have to use the USB port, so 4550 is the least to use.

The last try of 48x51 looks great! I do not care about white or black pieces or even the board. White pieces is just fine. But if the resources needed are too much, I don't know if it is worth to keep on trying...

Thanks a lot for the efforts,
Ioannis