Puzzle Question please help!?

Question

Ok, my brother is really good at solving puzzles but has an IQ of 90. My IQ is 120 and am pretty bad at it. So does solving puzzles have anything to do with IQ scores??? or how smart you are?? By the way hes good at metal puzzles and pretty good at rubik's cube but cant solve it. I can do sudoku

Answer 1

IQ is only for reference.

Like any kind of test, it is not an absolute measurement.

Or maybe your brother just had a bad day when he take IQ test.

Too many other factors to make IQ scores not reliable.