What's the secret? Well, luck is a significant factor. If you look at my scores, you see that Compute score is pretty low, except for Coin-parison. That's because I don't really compute the coin, but use instinct, instead. So I would make 40+ guesses, 6-10 would be wrong. So luck is a big factor.
Still, I have a big brain now. It weights 2023g. How much does your brain weight?