int x2, int y2,
char **error);
+/* Pass rather than moving, allowing the turn to pass to the
+ * opponent. This should only be allowed if there are no legal moves,
+ * but that is not yet enforced. Returns TRUE if the pass succeeds. */
+int
+dvonn_board_pass (dvonn_board_t *board);
+
/* Is the cell at (x,y) occupied by a piece. Returns FALSE for all
* out-of-bounds coordinates. */
dvonn_bool_t
dvonn_board_cell_occupied (dvonn_board_t *board,
int x, int y);
+/* Is the cell at (x,y) occupied by a piece (or stack) with the given
+ * player's piece at the top. Returns FALSE for all out-of-bounds
+ * coordinates. */
+dvonn_bool_t
+dvonn_board_cell_owned_by (dvonn_board_t *board,
+ int x, int y, dvonn_player_t player);
+
/* Is the cell at (x,y) surrounded by other pieces, (such that it is
* not legal for a piece at (x,y) to move. */
dvonn_bool_t