x = 1;
y = 1;
r = false;
----------
x = 2;
y = 2;
r = false;
----------
x = 3;
y = 3;
r = false;
----------
x = 2;
y = 1;
r = true;
----------
x = 3;
y = 1;
r = true;
----------
x = 1;
y = 2;
r = true;
----------
x = 3;
y = 2;
r = true;
----------
x = 1;
y = 3;
r = true;
----------
x = 2;
y = 3;
r = true;
----------
==========