Should also be offensive to the yard art consultant . . .
I would think that if he were designing a ysrd for chess, he should know the basics, regardless of the owner's ignorance.
I recall a man in my infantry days with a tattoo that stated, quite clearly, "Born To Loose." I pointed it out, and the next time I saw him, it could still be read -- barely -- being drawn over with a simple tattoo involving various flowers.
The tattoo can be excused for the artist, though, as many of these are handled overseas, and are usually verbatim to what the tattooee requests.