A good puzzle, it's a fair thing. Nobody is lying. It's very clear, and the problem depends just on you.

A good puzzle, it's a fair thing. Nobody is lying. It's very clear, and the problem depends just on you.

一个好的谜题，这是一件公平的事情。没有人在撒谎。很明显，这个问题只取决于你自己。

-- Erno Rubik 厄尔诺·鲁比克