I assume you mean getting your game analyzed. If so, click on view for the recent game you want analyzed, then, in the upper right hand corner, click on Computer Analysis. You will get a message when the analysis is done. It does a pretty good job.
If this isn't what you mean, then sorry, I never heard of submitting a game to the Tactics Trainer.
Thanks for your reply. No, analysis is not what I'm looking for. All challenges in TACTICS TRAINER came from actual games here at chess.com. I think my recent game with vincente1968 would qualify for a T.T. challenge. He/she quit the game after his/her last move...apparently for putting his/her queen "out there" for the taking. In reality, taking vincente1968's queen would have been the wrong move. Check it out...
maybe they resigned cause they saw you had mate
I've wondered how games get selected. I'm assuming that the chess.com engines analyze games, perhaps as they are submitted for computer analysis, perhaps randomly selected, perhaps a combination of the two.
A tactics trainer problem could be any position that occurs in the game for which there is one, single, good move that results in a dramatic change in position, such as a gain of a piece.
I wish we could at least do a search on tactics trainer problems and see if any of our own games are in their, to find out if we have been "immortalized".
maybe they resigned cause they saw you had mate
I'm guessing Qf7 was a mouse slip. He starts moving toward e8 to take the rook. As his mouse hovers with the button down, realizes the knight is there, and that he should take with the bishop instead. He starts to drag the queen back to where it belongs, and it slips onto f7, leaving the mate, or, even if he didn't notice the mate, losing the queen. In disgust at losing because of a mouse slip, he resigns.
it could be a tactics trainer problem, because there is one move that is easily better than any other move. On the other hand, there are two moves that lead to either a win or a major advantage, so it might not qualify.
How does one go about getting a recent game submitted to tactics trainer? Thanks in advance.