It means that, at least for the first turns, most of your offspring will not land and maybe not even crash. Why so few genes ? Would you lose too much time if you add 40 or 60 genes ?
I understand why you were surprised by my evaluation function that only "roughly" looks at the distance to the landing site.
I start with 120 genes, one for each turn, but when I mutate the chromosome, I only mutate le genes used before crashing/landing, so the number of genes is not that important, as long as there is enough to "crash/land".
With my 700ish mutations, I'm not that far.
I'm trying to work on "Coders Strike back", but I'll get back to Mars Lander and I'll try some of your ideas.
Thanks for your help.