Yeah, you're right, last 8 ambiguous but obvious by pattern.

Easy enough to guess ending. thank you.

Thanks.

Nice pattern. Thanks.

My center is R11-c11, c13, & c15, R12 c12 & c14, R13 c11 & c15, R14 c12 & c14, and R15 c11, c13,& c15. And yet it tells me it is invalid. What am I missing? It completes as finished.

Never mind. Played it two more times and got it on the second time. Each time I got to end all squares were covered but there is only the one end. WOW.

Even considering the pattern, there are still two possible solutions.