GoFish

Description

I've created a brand new chess platform with a unique authentication system!
By proving your skills by solving a few chess puzzles the system will understand who you are.
Of course, you’ll still need the password ;)

Solution

We have to solve 40 chess puzzles and get the best move to get the flag. The puzzles are randomly generated with a seed between 0 and 10000, the best move is also selected randomly with the same seed so we can bruteforce it.

After all the right answers are given the password is generated using a custom hash and all the moves as input.

solve script Here.