function err = KB1Fs(x)
%

F(1) = -0.8197+(1-x(3))+x(4)+x(5)-(1-x(3))*x(4)-(1-x(3))*x(5)-x(4)*x(5)+(1-x(3))*x(4)*x(5);
F(2) = -0.75561+(1-x(5))+(1-x(4))-(1-x(5))*(1-x(4));
F(3) = -0.79113+(1-x(5))+(1-x(4))+(1-x(3))-(1-x(5))*(1-x(4))-(1-x(5))*(1-x(3))-(1-x(4))*(1-x(3))+(1-x(5))*(1-x(4))*(1-x(3));
F(4) = -0.86739+(1-x(2))+x(3)-(1-x(2))*x(3);
F(5) = -0.81136+(1-x(3))+(1-x(2))+x(1)-(1-x(3))*(1-x(2))-(1-x(3))*x(1)-(1-x(2))*x(1)+(1-x(3))*(1-x(2))*x(1);
F(6) = -0.4219+(1-x(2))+x(4)-(1-x(2))*x(4);
err = norm(F);
