Dear USA players...

I have an inmate's address if you want to play postal with him. thanx

His address is in my profile ...he's ready for your competition...tyvm

Please join/renew the United States Chess Federation asap tyvm

rates rise June 1st --- thanx

inmate D38967 awaits your move via jpay.com ... he only responds via letters

No numbers/digits?

So maybe "white square bishop to fourth file, check" check?