After JdZdC 2014, JZC 2015 was held in March. You can see puzzles here.
Maybe Round8 is useful for the 24HPC Japanese Round, isn't it?
This year, I prepared Round4 with Takeya. This round includes Classic Nurikabe and 3 variations.
Rules of variations are,
Overlapping: each grid should be valid as Nurikabe
Pairs: from MellowMelon
Borderline: numbers on the edge must be placed in one of the two neighboring cells
And about bonus puzzles:
Top left: Classic Nurikabe
Top right: Pairs
Bottoms: as you can see from names and images
My main targets this year were,
To use hard classic logic and
To make intuitive Classic
In fact, both are I tried for a long time.
"Hard logic" is just reuse of what I know well, and some Japanese should be especially familiar with this logic. So the second target was rather harder, and I fully used my knowledge about how this type can be unique. I relied on solver for checking, and thanks to it, I think I obtained some new insights. They should be useless, though!
And I also made a Tapa for exhibition. As an exhibition puzzle, I tried to use some useful steps for competitions.