JonnyP71
Explorer
The key issue here, to my mind, which I've reiterated multiple times but on which I've seen no reply, is this: a wizard with a 5 STR is a perfectly playable character, whose player will have no trouble fully engaging with the challenges of the game. But as many in this thread are presenting it, a fighter with a 5 INT is not a character whose player can fully engage the challenges of the game, because to do so - to actually take part in what is, at heart, an intellectual pastime - is a failure of roleplaying.
I don't understand how this asymmetry is supposed to be justified.
If the GM wants the fighter to suffer for having a low INT, put in a lot of maze spells and languages that need deciphering!
The are already rules in place regarding STR mechanics though in game terms (5E PHB Pg 176) - regarding lifting, carrying and encumbrance. If anything they are a little too forgiving - *30 is somewhat unrealistic as an average man cannot shift 300lbs.
If the DM says a grate weighs 200lbs then a 5 STR (max 150lbs) character cannot lift it, whether or not they make a strength check.
And a STR 5 PC *should* have a slower movement speed if carrying more than 25lbs!
Maybe the simple answer is for a DM to say 'this puzzle cannot be solved by any PC with an Int of less than 12' as an example? If the DM wants to allow the player to discuss the solution with the group then that is fine, as levels of roleplaying vary from table to table. But in such a case it would have to be an intelligent PC to actually apply or explain the solution in game.