It took my solver almost ten minutes to finally, completely dead end this one. I'm STUNNED someone managed to complete it even once. I wish I had more constructive criticism, but this is just not logically solvable. Even making some assumptions, I can't make head or tail of it. Sorry.
r1 c7-8, c18-19
r17 c5-10, c17-21
c1 r9, c11, c13
c25 r10, r12.
For the rows with the 4, 8, and 6 as the centers, use symmetry for the center 3 of each.
This is based on the Dolan Duck meme (aside from the forehead lines), so use that as a general guide.
Also, how does this have anything above a 1 star rating?
First off, definitely start off with the hints that me and Teesea gave.
After that, plug these points in:
r3; c2-4 & c7-8
r5; c18
r6; c8 & c23
r7; c4, c9, & c24
r8; c10
r11; c18
r13; c24
r15; c23
r16; c4 & c22
Hopefully this helps without giving too much away @_@.