This code is for solving the Einstein Who Owns the Fish puzzle. Right now all I get is No solution found. The code is below and I have solved the puzzle finding that the green house owns the fish. Just need help with the code.

$//$ the green houses owner drinks coffe, which is the German

if$($value $==$ COFFEE && houses$[$h$][$NATIONALITY$]!=$ NONE && houses$[$h$][$COLOR$]!=$ GREEN$)\{$

return false;

$\}$

if $($value $==$ TEA && houses$[$h$][$NATIONALITY$]!=$ NONE && houses$[$h$][$NATI