Filter with join where null is wildcard

I'm writing a query in SQL Server, and I have a task to filter first table:

With data from second table:

The issue is, data in second table have "wildcards" - if there's NULL in column, than it can be any integer. Long story short, filtered table should look something like this:

I can probably end up with way to filter that with loop, but it seems don't be optimised at all.

To further clarify - the second table has "mask rules" to apply to the first table. Mask rules are going from c1 to c4:

• t2.c1 can't be NULL
• others can, but if t2.c2 is NULL, then t2.c3 should be too (just as t2).

One possibility is to use NOT EXISTS and then check for your filter conditions replacing null with the value from table1 so it matches e.g.

select *
from t1
where not exists (
    select 1
    from t2
    where t1.c1 = t2.c1
    and (t1.c2 = isnull(t2.c2, t1.c2))
    and (t1.c3 = isnull(t2.c3, t1.c3))
    and (t1.c4 = isnull(t2.c4, t1.c4))
);

Note: This assumes that c1 cannot be null.

Returns:

DBFiddle