Thanks for playing! I do agree with you, as the game stands there's far too much guesswork involved. Upping the number of guesses you can make would be a good solution, but I had really hoped I could make some improvements to the hint system that cuts down on the guesswork. Something along the lines of "Yes, this character is in the solution, but it belongs somewhere in the Red hexadecimal pair."
I unfortunately just ran out of time to implement it and test it out before the jam ended. Hopefully I'll have something like this in the game in the next week or two, but if it doesn't work out I'll definitely look at upping the number of guesses you can make.
Thanks again for the feedback!