Sudoku
Sudoku
game.
game.
The
The
objective
objective
is
is
to
to
fill
fill
a
9x9
9x9
grid
grid
with
with
digits
digits
so
so
that
that
each
each
column
column
and
and
each
each
row
row
contains
contains
all
all
of
of
the
the
digits
digits
from
from
1
1
to
to
9.
9.