I can add a Delete option if no player made more than one move. Otherwise I'm not sure how to determine conditions for deleting a game. What if your opponent is on two-week vacation and he set this vacation in his Settings, would you take it as "not progressed too far"?

No if there was notification the player was on vacation that would be cool, at least you would know. What i was getting at was if say you decided you didn't want to play a 5 game match and the game hasn't started you could opt out. Being new and not knowing the conditions of the match ie highest score at the end determines winner. I prefer the certain # wins myself. I am not trying to weasel out of a game its just i like more normal games.

Okay, it can be done by this way: If you start a game [normal or match] and your opponent doesn't make any moves, you can delete the game and nobody's the winner. Would that be acceptable?

There should be that option. I do know that people start games and because of real life can not come online and move frequently, thats not the issue. If you change your mind about a game you should be able to opt out as long as no moves were made. I am continuing the game i have and thats not why i brought all this up. Sometimes people just change their minds.

I've just added it to my TODO list. To the very top :-)

you should make it within the first 4 moves like iyt & gt :-)

It will be made within first two moves of both players. So the result is first 4 moves, isn't it ;-)