Are there moves in chess that are considered unsporting? In many sports, you often find legal tactics that are considered unsporting by fans, spectators and/or opponents. For example, in football (soccer), it is often considered unsporting to simply pass the ball around your back defenders instead of trying to attack. Are there any similar situations in chess?
Some examples that I can think of: perhaps it is considered unsporting, or perhaps indicative of lack of skill, to promote 5 pawns and crush your opponent instead of looking for a more elegant mate in a winning position. Also, in my school days, we used to think of scholar's mate as a bit ... unsatisfying. There even used to be a meme going around that scholar's mate is not allowed (probably started by the coach to get the kids to play &quot;proper&quot; chess).
To be clear, I'm not so much looking for unsporting behaviour as unsporting moves. I can imagine it being very unsporting to, for example, let your clock run out when you still have 40 minutes left rather than resigning in a lost position, forcing your opponent to hang around just in case you actually make a move.
Are there any other examples you can think of? Or is chess a case of - if it's legal, then it's good?
Update: Just as I was starting to think that unsporting moves are few and far between, Kamsky and Gareev played to a controversial draw by three-fold repetition in round 1 of the US champs. According to the GM's doing the analysis, Kamsky was pretty much forced into the draw, but Gareev had the opportunity to play an alternative move to continue with the game.
So let's say you have the following situation: player A plays against a much stronger opponent B. By luck or miracle, player A finds himself ahead in the game, and see the opportunity to force a draw (or maybe he is so far ahead that he knows player B would accept a draw if offered). Is it unsporting for him to draw the game then?
What is "unsporting"? To my mind (backed up by the two or three definitions I quickly browsed), it's mostly about behaviour. To act sportingly is to be fair and respectful, to play for the (mutual) enjoyment of the sport, and&mdash;here's the tricky part&mdash;to not abuse the rules for an unfair advantage.

Unsporting behaviour in general, and the last kind in particular, often leads to new rules being introduced. ("No underarm bowling in one-day cricket" is the first example that comes to mind.)

I can't think of anything on the board (as opposed to players' behaviour, or abusing the clock) that would strike me as unsporting. And the lack of new rules to counter anything on the board would seem to support that view.

So essentially, no: in standard chess, "if it's legal, then it's good". People might complain about how some style of play (whatever's new and trendy and effective) is changing the spirit of the game or whatever, but so far everything still seems to be fair play.