You can refer here for details.
Rated : Again, easy-ish by LMI test standards, medium by the blog’s. Solution for this and Puzzle 18 added. It has both solutions so only see once you’ve tried both! Password – PP12
Enjoy!
Puzzle No. 19
Jan
19
2012
PS's puzzles + 
I will try this again, but i think there is an error with the puzzle.. there are more than one loops..
I think you should try it again, because I have tested it numerous times and there’s already been a reply on the LMI forum saying someone solved it. I have designed it in such a way that that exact thing (more than one loops) needs to be avoided as part of the solving logic. Either way I’ll have another look too.
There’s only one solution. There are a couple of places (e.g. top-right, mid-bottom-right) where the 4 different ends can be paired in two different ways. Just be careful to not pair ends of the same line.
Thanks Prasanna.
The first time I played this type puzzle is on LMI October test, and I also write the steps of that puzzle here http://www.sudokufans.org.cn/forums/index.php?showtopic=312&view=findpost&p=1664
It is better to make a onlineplay link for Japanese puzzle by using this site http://indi.s58.xrea.com/pzpr/v3/index_en.html
I’ll definitely check that out later on today and see if I can do that.
Great!
The software pencilbox is also useful to create link for that site. You can download it here http://sourceforge.jp/projects/pencilbox/
you are right.. my bad, the puzzle is correct and quite nice 🙂