atbox                   atbox()
atcol                   atcol()
atrow                   atrow()
bt_solver               bt_solver()
check_grid              Check_grid()
grid_gen                grid_gen()
grid_gen_cplt           grid_gen_cplt()
grid_gen_lv             grid_gen_lv()
ispossible              ispossible()
nbrposs                 nbrposs()
order_wposs             order_wposs()
perm_mat                perm_mat()
perm_vec                perm_vec()
plt_grid                plt_grid()
plt_grid_play           plt_grid_play()
poss                    poss()
runSudoku               runSudoku()
solver                  solver()
