No, it's not, it's just a strategy.

In a blitz tournament, my opponent was 9 stones stronger than I was, and when he needed more time to think in one situation. He cleverly put a stone somewhere else, that needs more reading for a player on my level (say, put a stone on 3.3 in my almost enclosed corner). If i didn't respond correctly, it would cause trouble there. In this way he had more time in reading the situation that he actually need. Note, he was not under time pressure, when he did this.

Would you consider it being a poor sportsmanship? Of course, no. I consider it to be a very smart strategy, it gains him extra time. So why do you consider the similar action under time pressure is poor sportsmanship?

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长考出臭棋.

Also known as the "Rubin427 clockless tesuji".

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My days of not taking you seriously are certainly coming to a middle

In the get strong series, they should consider adding - Get Strong at Time Management.

Seriously, the strategy of playing nonsense moves that force your opponent to respond so you win on time demonstrates what? The question isn't whether it's allowed according to rules and thus within the bounds of the game. Of course it's allowed. Just because you're allowed to do something doesn't make it ethical. To win like that is perfectly legitimate but it's a hollow win.

I'm looking at this in terms of a regularly timed game. Blitz games are all about skill under time pressure, which is different. Yes, I know the OP couched the scenario in terms of a fast game.

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"This is a game that rewards patience and balance. You must think like a man of action and act like a man of thought."
-Jonas Skarssen

Yesterday there was a 5d blitz game on KGS where one player chose to play every single possible point on the go board at the end of the game with what I assumed was the intention to bore the opponent into resigning, escaping, or lagging out.

I agree with many here that you can take advantage of the clock, but I don't think it's black/white what is ethical.

Zombie topic resurrection!
Kokomi: grammar police should really book you. You can speak English properly, so speak it properly. Edit: You could speak English better than that... Your other post was still grammatically unsafe, but it is much better. 2nd Edit: I thought I lost my 1st edit

I'm starting to like where Helel is going. The meanness that he exhibits actually has a point to it.

Go is not an art, it is a battle of the mind. I'm guessing you haven't seen Hikaru no Go where people lose more than just the game, they lose their soul. Oh whoops, wrong show, but you can teach the person a lesson that they can't just have all the time that they want.

If they can't handle time restraints and they are boring you, then you have all the right to use your time to destroy them. If you are just wasting your own time and not learning anything, then you're stupid, pathetic, and boring

Either finish them quick, or don't bother playing with so much time. If you know you lost, then just resign, and suck it up.

(if you have a girlfriend) You can lose a game to your girlfriend and then propose. That's recommended. I like how you think.

Let's just put the boring person who loses on time on the ignore list, and you never have to worry about them again. Permaban is silly.

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LoL forum:
"Complexity is Magic: The Gathering, lots of tiny rules and special cases, and basically every single card is a unique case. Depth is Go: the game has 4 rules, and it takes literally decades to learn how to play that game well."

"Regularly timed games" have a reasonable byo-yomi or some other form of overtime, so this strategy will not work anyway.

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My name is Gijs, from Utrecht, NL.

When in doubt, play the most aggressive move

Respecting your opponent means playing your best game, which means doing everything allowed within the rules to win. Resigning when you could win is condescending, I feel.

My stance is that its not unethical and I would not oppose my opponent doing it, but neither is it something I would like to do myself to anyone.

I think that games with absolute time settings clearly presuppose that some ways of exploiting the time pressure are unethical. Otherwise, if the sole purpose of the players is winning, the game quickly degenerates into something that I, personally, would not call go anymore. To my mind blitz-games with byo-yomi, too, are slightly degenerated games, though they still qualify for the name of go as long as a minimum of ethical obligations are acknowledged by the players (such as not playing meaningless moves in order to win on time). Time settings that reduce time pressure to a minimum - or no time setting at all - come closest to the true and pure spirit of go, as I see it.

Go without time pressure would still be go, but what would go be without ethics?

If the opponent runs out of time(or makes a mistake) in byo-yomi it's his fault, if he runs out of time in absolute time games it's the rules fault. Since go is simply not made to be played with absolute time.

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Sanity is for the weak.