Optimizing the Himmelblau's function:
function ([x, y]) {
    n++;
    return pow(x * x + y - 11, 2) + pow(x + y * y - 7, 2);
}

starting simplex:
s[ 0 ]= 4,3  f= 100
s[ 1 ]= 2,1  f= 52
s[ 2 ]= 4,1  f= 40

calling amoeba with eps= 0.001  ...
...done!
optimized simplex:
s[ 0 ]= 3.0001182585256174,2.0003085486823693  f= 0.000002865943082396303
s[ 1 ]= 3.0002871994802263,1.9997890060476493  f= 0.000002596957478084969
s[ 2 ]= 2.9997389900963753,2.0000636556651443  f= 0.000002257053091598921
number of function calls: 225

exact solution:
[x,y]= 3,2