Make.

Your grid.
Your numbers.

Build a puzzle, check that it has a solution,
and publish it for anyone to play.

1. 1
   Draw walls

   Click the line between two squares to wall it off.

2. 2
   Place numbers

   By hand, or Find path then Auto numbers.

3. 3
   Validate and publish

   Playtest it, save it, then publish it to the community.