Peg solitaire is a single-player board game that involves moving pegs on a wooden or plastic board. The objective is to remove all but one peg by jumping over adjacent pegs, similar to the game of checkers. The game typically starts with a specific arrangement of pegs, and players must strategize their moves to reach the goal. The board usually has a cross or star shape, with holes for pegs. Players can only jump over one peg at a time, and the jumped peg is removed from the board. The challenge lies in planning moves to ensure that only one peg remains at the end.