Jump marbles over each other to clear the board. Leave just one marble!
Marble Solitaire, also called Peg Solitaire, is a classic single-player board puzzle dating back to 17th-century France. The board features a cross-shaped grid filled with marbles except for one empty center hole. You move by jumping one marble over an adjacent marble into an empty space, removing the jumped marble from the board. The goal is to eliminate all marbles except one, ideally finishing with the last marble in the center position. Each move is irreversible, so the challenge lies in planning a sequence that avoids leaving isolated marbles with no available jumps. The puzzle has been mathematically analyzed extensively, and achieving the center finish requires precise sequencing. Marble Solitaire is a timeless exercise in strategic thinking.