and boy would I love to see the look on the rogue and the wizards faces if the half orc beat them both (cause nat 20s happen)I think there is a dragon chess tool set prof... I would think Int would go with it most times (maybe wis) so it would be an apposed tool kit check... and on a d20 a half orc with a -1 against a skilled wizard with+7 (4 int 3 prof) it still isn't going to be every game the wizard wins...
on the other hand the 11thlevel rogue with a 19 (headband) Int trained and expertise for +8 min roll of 10 is going to beat both most times