Nine Men's Morris is a board game between two players: White and Black. There are many online imple- mentations available online. See, e.g., https://www.mathplayground.com/logic_nine_mens_morris.html
The Morris Game Variant is a variant of Nine Men's Morris game. Each player has 9 pieces, and the game board is as shown above. Pieces can be placed on intersections of lines. (There are a total of 22 locations for pieces.) The goal is to remove opponent's pieces by getting three pieces on a single line (a mill). The winner is the rst player to reduce the opponent to only 2 pieces, or block the opponent from any further moves. The game has three distinct phases: opening, midgame, and endgame.
Opening: Players take turns placing 9 pieces - one at a time - on any vacant board intersection spot.
Midgame: Players take turns moving one piece along a board line to any adjacent vacant spot.
Endgame: A player down to only three pieces may move a piece to any open spot, not just an adjacent one (hopping).
Mills: At any stage if a player gets three of their pieces on the same straight board line (a mill), then one of the opponent's isolated pieces is removed from the board. An isolated piece is a piece that is not part of a mill.