alt Hacker Newsafaik, guessing anything not 00000 or 11111 at first step will lead to an optimum strategy of 3 steps. because you introduce possible "right digit at wrong place" as a third state.
guessing 00000 or 11111 removes that third state and leaves you with simple substitution of wrong cells, which leads to an optimal 2 step strategy.
but obviously the shortest strategy is just guessing it right on the first try :D lol
Replies
Jtsummers • last Wednesday at 2:57 PM
It's still two steps. You only ever need to flip wrong digits.
It doesn't matter.
Right digit at the wrong place = wrong digit = you should flip it.
This puzzle won't take more than 2 guesses no matter what you input the first time.