Interesting game. I have activated my notification for it. I remember your other thread where we had discussions about your project and happy seeing it to come this far.
-snip-
Yes, I also remember. We discussed the security of such visual patterns. In theory it was easy to say that "knowing the pattern type" it would be easy to retrieve the private key.
Actually this puzzle represents a practical security challenge with much easier conditions - instead of 256 unknown bits only 116 bits should be found.
I also believe that some "clever bruter" could be written, however considering the amount of prize it is pointless for the majority of programmers.
nah, 144 bits is still too huge to write any kind of brute force for it. even if it is reduced to a small size with your fifth hint or some other "clever" moves like having multiple points side by side for different parts of the "face".
To be honest I also have no ideas how to write such a "bruter". It is not brain wallet there we calculate key from the phrase (and can use vocabularies as the source). It is like "visual brain wallet" which is easy to observe for a human but difficult to code for a machine. Machine should be intellectual to undertand visual patterns - it is not easy, but possible. I intentionally did not select "2-axis" symmetric figure (like sun, star or snow crystal) because the figure could be brute forced just for 2^(116/4)=2^29 combinations in that case.