It all connects.

Multiple possible solutions.

I guess this one gets 2/10 for having at least some squares that can be solved logically.

Managed to guess the central spiral ok but couldn't guess the last outer bits.

I'm still stuck on the outer bits too.

The biggest surprise was when I guessed it right. It really does all connect.

Es verdad que todo conecta pero lo resolví adivinando, sin lógica.

Got it to connect but can't get it right.

Was going through puzzles I saved an never finished. Managed to get a lucky guess on this puzzle. As Biglib007 said, all the squares are connected.

**SPOILERS**
The entire middle spiral can be solved logically, so my hints are focused on the outer squares. The hints will also help solve the middle spiral though.
R1 C14 ; R2 C13,18 ; R4 C4,23 ; R5 C3,24 ; R10 C1,25
R13 C1,24 ; R15 C2,23 ; R20 C1,4,23 ; R25 C10,23.

Thank you Strigoii.

Thanks, Strigoli! ^^.