I mean the CPU didn't exist yet at higher frequencies. At that time, 68030 was either 16MHz or 20MHz.

What is the version of v9 in MessChess? I searched the internet, but I could not find the Fidelity Elite V9-16 MHz anywhere.

I only received the rom files, I can't find pcb photos or even a video of a V9. I do remember someone on a forum mentioning that theirs has a 40MHz XTAL. That would make more sense (20MHz actual cpu speed).

Hearing the pitch of the sound bleeps(video or audio recording) of an unmodified V9 would definitely help here to determine CPU speed.

Sorry, you are wrong. The Macintosh IIci for example was sold since 1989 and had a 68030 with 25 MHz. In Spring 1990 the Mac IIfx was sold with a 68030 with 40 MHz. Somewhere between those releases the CPU was available with 32 MHz also. If it was used in the V9... I don't know of course. But the CPU was available at that time.

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OK Fair enough, I'll change it to 32MHz again =)