Some multiple options there at the end - everything radiates from the corners to the centre.

Very nice puzzle. The last 20 squares or so need to be guessed at but it's fairly easy to figure out! Don't get tripped up on the 23 line across b/c it's NOT symmetrical like the rest of the puzzle! Thanks for the fun! ~:)

Four leafed clover? Lovely puzzle!

Well done, thanks!

Thanks.