Matthew, if you open any of the games being played here on Game Courier
and click on the 'Ratings' box, you will see ratings: restricted to that
game variant. Replace the name of the game variant with a * in 'Game
Filter' and click the 'Submit' box, then you will see the overall
ratings.
Playing random moves should result in a rating around 400 points below the
weakest player in the pool (depending on how ratings are computed). For
example, a ten year old child with an 800 rating has already mastered the
Scholar's Mate and will attack the Queen with Knight. A 1200 to 1600
player, with a little practice, should win every game against a 2-ply
depth search, which is consistent with a machine rating in the 800 to 1200
range.