Ô ăn quan vs Computer

Each village square starts with 5 stones, each mandarin square with 1 mandarin (worth 10 stones). On your turn, tap one of your squares, then tap a neighbouring square to choose the sowing direction. When your hand is empty, look at the next square: if it has stones, pick them up and keep sowing; if it is a mandarin square with pieces, your turn ends; if it is empty, capture everything in the square after it, and keep capturing while you meet another empty square followed by a full one. If your row runs out of stones, put 5 of your captured stones back (borrowing if you have too few). When both mandarins are gone, each side collects the stones left in their row and the higher score wins. You start at level 1/5: a win moves you up a level, a draw keeps your level, a loss moves you down a level.