At the meantime (not mobile friendly): https://www.chiark.greenend.org.uk/~sgtatham/puzzles/js/pegs.html https://www.chiark.greenend.org.uk/~sgtatham/puzzles/js

At the meantime (not mobile friendly): https://www.chiark.greenend.org.uk/~sgtatham/puzzles/js/pegs.html https://www.chiark.greenend.org.uk/~sgtatham/puzzles/js/pegs... It is part of Simon Tatham's puzzle collection, it also has an app on F-Droid: https://f-droid.org/en/packages/name.boyle.chris.sgtpuzzles/ https://f-droid.org/en/packages/name.boyle.chris.sgtpuzzles/ And the sgt-puzzles package on Debian/Ubuntu, possibly other distros package it too.