68K Chess prototype or project

Hi I just picked up an interesting item from WeirdStuff. It seems to be an 8X8 grid with magnetic reed switches, a 68K processor on a proto board. It had a 4 digit LCD display ( that was broken ), 128K bytes of RAM, 128K of ROM, a clock crystal and assorted parts. I'm wondering if it was a prototype for soem game system or maybe some project from some magazine? Does anyone know of such a magazine project? Who ever built it had access to HP parts. The proto board is gold plated and it has 1820-0976 parts on it ( 4015B ). Not the kind of thing you see often. I've not tried to power on yet. I have another similar display but I don't know if the pins are the same. One of the keypad switches is broken and missing parts. I believe the keys marked P, N, K, B, R and Q would indicate the intent was in fact Chess. Dwight