Slitherlink

Slitherlink puzzle is an online game inspired by a traditional Japanese puzzle created by Nikoli.

Puzzle 1

5×5 grid
Time 0:00
Choose puzzle
Ready to play

Draw a single loop that satisfies the clues.

Rules
Connect adjacent dots with vertical or horizontal lines to make a single loop.
Numbers show how many lines surround that cell.
Empty cells can have any number of surrounding lines.
The loop must not branch and must not cross itself.
Click once = line  ·  twice = X (mark as blocked)  ·  three times = clear