Pre-Moves should take 1/100th of a second.

Premoves should also be ideally server side not client side.

I think pre-moves should take 0.0 seconds.

If premoves were sent to the server, in advance, it would be a lot harder to cancel them.

I think I'm unclear on the concept. Wouldn't it be a GOOD thing if we can't cancel premoves? That would be the cost of making premoves!

I wish we could cancel. I have accidentally made premoves by swiping too fast. In one game it caused me to move my knight out to c6, back to b8, and then out to c6 again! As of now refreshing cancels them. Maybe clicking on one of the premove squares should cancel it.

https://support.chess.com/article/642-what-are-premoves-and-how-do-they-work

"To undo a pre-move, simply right click or tap on the pre-moved piece."

You can cancel a premove.

I tried the tapping on the piece, it didn't work on my phone. It stays highlighted, and sometimes registers it as another premove. Refreshing always cancels it though. One thing they should have is "trigger-moves", moves that are automatically made for you if they are the only legal move (the downside though is it may confuse you for a couple seconds). So if for example in this position both sides had trigger moves enabled, the following sequence of moves would play instantly and then declare black the winner:

A human still has to recognise that something is the only legal move in a chess game, I don't see why they should be played automatically? Esp. in a less contrived example where you have to move your King to only one square in a middle game or block a check with a piece. Sometimes it can take players quite a few seconds to realise this.

That's a position where finding premoves should be easy, but playing quickly is still part of the game and shouldn't be automated even in forced positions.

I agree for timed games, but in the case of daily games, having the ability to play forced moves at the end of a game would stop some of the most egregious stallers.

Premove legality depends on opponent moves. You may only have 1 legal move if your opponent checks you a certain way, that's not the same as a premove. It would only make the trigger move once that moves is in fact the only legal move in the position. It's not doing any thinking for you.

I've won with less than a second. And I've Also accidentally refreshed the page at 4 seconds up 2 Queens a rook and a knight and 3 pawns, and lost!

That's why this site is in need of a "dead position detection program", (which I have a couple of interesting threads on btw), which would automatically detect drawn positions due to locked pawns/bishops on same color..etc, like below:

Where checkmate is impossible via any sequence of legal moves for anyside..e.g. Drawn and not "drawish".

One player had the advantage of using more time, shouldn't the other play be able to exploit that fact? Also there is increment chess for a reason.

Presumably OTB you could play this position for a win too if there's no increment?
Being able to make 40 pre-moves in 0 seconds doesn't sound like it implies high skill, if it is necessary to do that in order to win it implies too much time was spent earlier in the game, or it's a nonsense time control where the result is pretty much irrelevent anyway!

Not when the game is already over, as it is here. That is a drawn position. It should end immediately. That would be like deciding who wins in a king and knight vs king position based on who has more time left, doesn't matter, the game ended by insufficient material already. Same thing here essentially.

No, a dead position is a draw and can't be won if mate isn't possible.

Time pressure should be a real thing, but generally it feels unfair to lose if the time for thinking up a move is lower than making the move on board.

In your last 25 games, the vast majority of your first moves were 0.1 second.