[jabbywocker]

Completely missing the point on purpose?

[johnisgood]

Elaborate.

[jabbywocker]

you don’t solve it by brute forcing possible solutions until one sticks

[johnisgood]

Yeah, read it in another comment. Why do you think doing calculations in your head is brute-forcing? Many people can do it flawlessly, without even knowing of these "tricks". They just know. Is that brute-force?