Feufels Quadrat aka the Devil’s Square!
This is an old puzzle game. Unsure of the date. Here is a brief description:
“<span style=”color: #565555; font-family: ‘Lucida Grande’, ‘Lucida Sans Unicode’, Arial, sans-serif; font-size: medium;”>The goal is to place all of the counters in cells on the board so that no counters of the same color are in the same row, column or “diagonal”. The completed board is completely filled”</span>
THanks and good luckSharing is Caring 🙂