QuickUnlock

It is a game that quickly find and correct the number code.
Please do your best to get to the right answer faster.

(Rule)
"Choose a number" → "UNLOCK" button
It is a repetition.

Also, if you press the "Hint" button on the screen,

For each value, either "H(high)", "o(hits)", appears "L(low)".
ex)
"3456" Correct answer:
"1857" input:
If the
"1 [H] 8 [L] 5 [o] 7 [H]"
I will be.

Further, Each time you press the "Hint" button, one hour will be added as a penalty.
Experimenting with ABC, good score might be obtained.

(Ranking)
For each level of difficulty, you will be able to register to the ranking score.