First time to have seen that chess set, prolly didnt get a manufacturing license from HasTakTom which is prolly why it never saw production. Otherwise, 3 years is avery long time just to conceptualize a final product which is a mere chess board game.
Robot heroes chess would be so cute and cool though! And they fit on the squares properly so need for a bigger chess board! Following Goktimusprime's list below we are a few figures short still to make a full chess set, so substitutions are in order, hehehe.
I knew I shoudve bought robotheroes, Im only beginning to see their appeal and usefulness, sigh
Wanted AM partner Vanguard, Myclones Dirge, G1 Victory Leo, e-hobby Dark scream ( the black version), e-hobby Magnificus
Parts- AM partner Basher-side guns, G1 Actionmaster Elite Windmill's blades[I][B]