Logic Puzzles #61-63 - Rever's 25 days of underloved puzzles - Day 8

 Kazunori Room

Day 8! This number placement genre has proven to be quite fun to set! Kazunori room seemed odd at first but I quickly realized it was an interesting genre. I'd love to see more of it!

Rules and link

Place a number from 1 to N into each cell so that each region contains each number from 1 to N exactly twice each, where N is half the number of cells in the region. Two numbers of the same value within a region must be orthogonally adjacent. No 2x2 area may consist of cells which all contain the same number. Clues represent the sum of the numbers in the cells they touch.

You can solve the top puzzle here using puzz.link's interface
You can solve the middle puzzle here using puzz.link's interface
You can solve the bottom puzzle here using puzz.link's interface