Cant find the task ( Help with the name of the task

Hi! Sometime ago I by chance found the task, where the PC could guess my number using not more the 10 attempts. There were a black frame (console simulation) inside the task and user guess number. After that PC is trying to guess the number and user answer only "more" or "less". Now I need to find this task by I can't :( Please help what is the name of that task? P.S.: I couldn't find it by myself is it possible it was removed? No, I don't think so. Somehow I missed it again and again.

Thanks! Yeah, that is why I couldn't find it.