Game description is way too insufficient!

I always thought you could only connect adjacent identical numbers horizontally and vertically. But diagonals are okay, and depending on the conditions, you can connect other numbers to chain combos. When I figured it out, I wanted to scream, 'Do the tutorial properly, damn it!' Well, the ads are short, so I guess I'll forgive it... Conditions for the conditions↓ ①You need 2 or more of the starting number (n) to begin tracing ②You can trace numbers that are n×2 (or just one is fine) ③After that, you can trace numbers that are n×2^m (where m is in order: 2, 3, 4, ...) Hope this gets across~