Players in turn enter new pieces on the board or move pieces already placed to capture opponent pieces (thus building stacks). Pieces on board must always be connected (i.e. adjacent to other pieces). When all pieces are placed and both players pass their turn in sequence, points are collected for pieces and stacks. The player with the higher score is declared winner. Abande can be played on a 37-space hexagonal board, a 7×7 orthogonal grid (with diagonals) and many other boards (even without a board at all).
A pretty basic PDF of a hexagonal grid of equilateral triangles, 4 edges on a side, suitable for playing Abande, Accasta or Attangle.
Page size is 11x17 so the grid will fit 1.5" poker chips. You could scale it down to 8.5x11 or A4 if you have smaller stackable pieces to play with.