Illegal Moves Should Be Legal

So, I recently went to a chess tournament for Blitz, and 2 of my games ended on me making an illegal move, not noticing I was in check (A rookie mistake, but this was basically my first blitz tournament.) I had a pretty good show in the tournament, beating some high rated players, but that made me think. Would it be possible to enable illegal moves, but when you make them, you automatically lose? This would really help me to train for my blitz games, as I would not make such mistakes anymore.

To Clarify: A setting where you can make illegal moves, but when you make them, you automatically lose.

But isnt that whats already in place?

OTB, yes. Online, no.

If you try to make an illegal move online, the software just won't let you.

yeah. thanks @BlueScreenRevenge

A few outcomes in certain scenarios might change though, especially those involving stalemates.

It's a reasonable idea... call it "Training Mode" or something.

Excellent idea.

On second thought, the downside to allowing illegal moves--which then trigger a forfeit--is that mouse slips and misclicks are so common. It would be a shame for people to lose a game because their finger slipped. The rule makes sense in OTB, but there are no mouse slips there.

This is a great idea. Imagine blitz with the added hectic nature of illegal premoves being fatal in time pressure. It would add strategic "bad moves" into currency. Lets say, an undefended rook placed in the pathway of a queen being premoved. The illegal premove would then result in a win despite it being a bad move.

I think it would be a cool variant.

Honestly, usually if you make a misclick, you lose anyways.

I do get your point though, but I would be fine if I lost to a misclick.

For me, I sometimes make "misclicks" OTB when I forget to check for check.

mods?

A blitz otb, move the knight as an alfil occurs. Game ends with king capture otb.

what

Alfil = Bishop.

Make all tournament boards a digital touchscreen instead of pieces. Then it wouldn't let you make an illegal move just like online. I don't like the idea of making moves like putting your king into check legal because that opens the door to the "stalemate should be a win" BS. One also shouldn't be able to deliberately make illegal moves hoping the opponent doesn't see it, and then use those moves to save an endgame after the fact. "Oh whoops I may have made an illegal king move earlier oh well now let me take all your pawns that I shouldn't have been able to".

Bishop?

In many OTB blitz games, king capture with a "legal" move is the only way it ends. Knights jump orthogonally and diagonally in such games. Moving a pinned piece is also common. The game runs too fast for the observers to enforce the rules. Maybe a camera to convert data to a computer to enforce rules would work.