talmud gemara - What are some good modern Brisker/Chakira based analysis sefarim by masechta?

I'm a big fan of the Brisker/Chakira approach to gemara b'iyun and looking for a sefer that I can use to learn either alone or with a chavrusa.

I'm looking for something in Hebrew, and (a) by masechta, and (b) something more modern than the Briskers themselves.