The peg solitaire game, also known as English peg solitaire or Senku is of uncertain origin. It is a board game played with pegs: in the classic mode, the board has 33 positions and 32 tokens because the center position is without form. The game is to remove the pegs but only with horizontal and vertical movements.
To solve the game is to leave only one piece on the board in the center position (which was initially empty). In the reverse modes, initially there is only one piece on the board: with the movements (jumping from one empty position to another position to get empty) tokens are added to get only one position is vacant on the board.