Here’s some Linesweeper puzzles.
The 7×7 one is an easy starter.
I (hopefully) fixed the ambiguity issue with the 8×8 one. It might be easier but it’s also nicer now, I think. The loop can’t cross the bold line and it has to visit the dotted square.
The 9×9 one is tricky. It has clues from 1 to 8, with 5 and 6 doubled. O means the clue is odd, E means the clue is even.