A TRS-80 Model III is eliminated in the early stages of the competition.
Year of feature (shown above)
It does look like a Model III, but it doesn't have any diskdrives. That's fine, there were cassette-based chess programs. But in the second picture it shows the bootscreenof TRSDOS 6.0, 6.1 or 6.2, and that means:
1. that it HAD TO have drives and
2. that it is a Model 4
There was a kit that could upgrade a M3 to a M4, but that also changed the keyboard with 3 very visible, white function keys. I can't see them. And also in that case, It had to be a disk-system. So I don't know how they did it, but there are some inconsistencies there.