buddhata: Thanks, I understand that but what I was referring to is that a 4d question has a ±1650 rating and a 22% win rate. This probably means it pops up in place which are not appropiate (like very easy for a 3k). That is my point...
Another thing which has happened (on a problem I can not find anymore because it does not show up in history is that when I fail on a problem and lose a heart; and then I switch to Level to leave a message (because you can not with the rating mode) I suddenly lose ALL my hearts. I have mailed Josch twice about it but he did not respond, maybe the bug report entered his SPAM account. It is quite an annoying bug...
buddhata: With very easy level in rating mode, sometimes I get 4d and 5d questions; like this one... in this way... I lose hearts and in the end I can not continue :(
Ivan Detkov: This is like in life, my friend. Do not get discouraged because you met a problem you cannot solve. Keep working and you will solve it at some moment in future.
Resolved.