HoDoKu Empty Rectangle

No matter where you put {0} in {1} the cell {2} cannot contain the value {0}.

If the value {0} is in {3} then {8} can't be {0} (The value can appear only once in the {4}),
so {9} must be {0} (The value must appear in the {6}),
so {2} can not be {0} (The value can appear only once in the {4}).

If the value {0} is in {5} then {2} can't be {0} (The value can appear only once in the {6})

Hence there are only two possible configurations, neither of which allow {2} to be {0},

Therefore we can remove {11}.

{10}