Easy as LITS
It’s a mashup of Easy as ABC and regionless LITS.
Standard regionless LITS rules:
- The shaded area must be continuous
- There can’t be any 2×2 blocks of shaded cells
- The shaded area must be tileable with LITS tetrominoes such that no two tetrominoes of same shape touch
Additionally:
- No row or column may have two tetrominoes of the same shape in it
- The clues along the edges tell the shape of the tetromino that is first seen in that column or row
- (L and J tetrominoes and S and Z tetrominoes aren’t distinguished)
- A bolded line between clue cells means the two cells can’t see the same tetromino
- No line between clue cells means the two cells see the same tetromino
- A dashed line between clue cells means the two cells may see the same tetromino, but not necessarily
Hopefully I was clear with the rules.
To clarify, do the clues with no line between them see the same exact tetromino, or possibly different tetrominos but still the same shape? (i.e. would two joined S clues be the same S tetromino or possibly two different S tetrominos?)
A joined clue is guaranteed to see the exact same tetromino.