Multiple possible solutions. In the future, Anonymka, it is a good idea to test solve your puzzle before submitting it.

Thank you for the puzzle.

Yup not logical.

**Spoilers**

These are the placements of the ambiguous diagonal lines (one dot in thickness).
R6,C2 to R1,C7 ; R6,C2 to R12,C8 ; R20,C2 to R14,C8 ; R20,C2 to R25,C7
R6,C6 to R1,C11 ; R6,C6 to R12,C12 ; R20,C6 to R14,C12 ; R20,C6 to R25,C11
R6,C24 to R1,C19 ; R6,C24 to R12,C18 ; R20,C24 to R14,C18 ; R20,C24 to R25,C19
R6,C20 to R1,C15 ; R6,C20 to R11,C15 ; R20,C20 to R15,C15 ; R20,C20 to R25,C15
R6,C16 to R2,C12 ; R6,C16 to R10,C12 ; R20,C10 to R16,C14 ; R20,C10 to R24,C14.

That was HARD WORK. Thank you Strigii!!!!! Couldn't have done it without YOU! Wouldn't even have bothered finishing it if you hadn't put all the work in!

Thanks for the hints, wouldn't have done it without.

Impossible to solve without Strigoii's hints, and it's not even a cool image.

Not logical.

Terrible one. Thanks for hints.