Another Why I think Childs Was Infected Thread

I just watched this at a special screening last night(original 35mm) and personally I think Childs infected.
I took a quick glance over the boards here. I noticed a lot of hints/theories covered, but there is one detail I didn't notice anyone explicitly mentioned, it may have been, but I didn't go through every page of threads on this forum.

Anyway the first scene is Mac playing chess against the PC. He assumes he has the game won, but In his last move he puts his king in the corner, and is then checkmated by the black rook.
Now if we jump to the last scene we see Mac walk into the burned out room where he sit down to take a much deserved rest(he assumes his battle is complete) in the corner wedged between oil drum, and the burned out wall. Just as he sits down Childs steps into the doorway armed, thus cutting Mac's only visible means of egress(aka Checkmate).
I mean it doesn't even seem all that cryptic to me.
It wouldn't be much of a stretch for Childs to be represented as the black rook. Just look how the we view the rook in game. It is seen as a powerful stoic piece that barrels straight ahead into battle, much as Mac himself describes Childs when they are trying to decide who the should be leader.
Then since Mac is a standard white male, white hat protagonist he can easily be represented by the white king as well, beyond the fact that it was his actual avatar in that first scene.
I could be wrong, but to me it makes sense that a filmmaker like Carpenter would sneak a visual reference to the ending in the first shot as a form of visual, and thematic symmetry.

I Shoot People for a Living.