- if my opponent accidentially misclicked the wrong button with the mouse (rather unlikely...)
- or if he misred the numbers (very unlikely...)
- if he is sandbagging (unlikely because playing out the whole game seems rather cumbersome, then)
- or if he got bored by my play and wants to put some kind of pedagogical example on me
Around my level there are still plenty of games which I win by more than ~30 pts, and I have no problem at all with that. Also a 15pts loss is not always clear to see - especially in byoyomi - so sometimes I just play quickly the remaining endgames to see the count. Maybe, if I eventually would become a dan after a couple of more years (