资 源 简 介
Enter a 4-digit number without duplicated digits, then press Enter and you will get the result in the form of ?A?B. "?A" means how many digits exists and at the right place, and "?B" means how many digits exist but at a wrong place.
For example:
Secret number: 4271
Opponent"s try: 1234
Answer: 1A2B.
Enter "q" to quit the game half way, "l" to list history.
Get 4A0B to win the game. You only have 8 chances to make it!
