Description:

It is a game to infer four numbers of hidden numbers.

Input an optional 4 numbers, and please infer from the result.

When matching a number and the locations, it's "Hit".

A number matches, but it is a "Blow" when place is different.

The occasion of 4Hit is a correct answer.

Features:

Changes with version 1.5.

The histories of the answer are able to be confirmed up to 20.

I added the screen of the history which you answered correctly.