Peg solitaire is a board game for one player involving movement of pegs on a board with holes. There are two traditional boards: English and French (aka European). The standard game fills the entire board with pegs except for the central hole. A valid move is to jump a peg orthogonally over an adjacent peg into a hole two positions away and then to remove the jumped peg. The objective is, making valid moves, to empty the entire board except for a solitary peg in the central hole.
This app has a collection of over 100 initial setups of different difficulty levels. It’s a great puzzle game for people of all age groups.