What's the differences between inaccuracy, mistake and blunder?

the engine evaluates wrong there are no inaccuracies a mistake loses the game and a blunder takes a game from win to loss

@hydrophilic to put in terms more understandable, here some analogies:

• blunder: you give your queen away or get mated in one.
• mistake: you give a bishop or knight away.
• inaccuracy: you give a pawn away.

These are only examples, so you can understand. Dont take them as reference, there are a lot of another factors to consider.

They are the same.

Agree with #11

Inaccuracies are often random, 1.d4 d6 is not inaccurate it's an opening choice. Often it will be evaluated +0.8 but a few approved moves later from both sides, it's suddenly only +0.2 :D

I would sy that a blunder is a move that automatically makes you lose the game or equalise the game if in a winning position. A mystake is a terrible move but you can still come back into the game. An inacurracy is a move which is not considered a really good one but its utility is still argueable.

@Mahith1708 you are wrong. There is inaccuracies. And they should be taken into account if you're above 2200 when analysing X position. Also, just saying but the engine is far more powerful than a human so I don't know why you're saying that inaccuracies are inexistent. For example, in the GPA (grand prix attack), playing exf5 can in most positions be a inaccuracy as it slighly worstened your position (it can be considered a blunder in some rare positions) because you have double pawns and white increases its chances to attack on the kingside but it's still playable for black and white is no where winning.

@gothica31 Inaccuracies (?!) do not exist. Either an inaccuracy alters the game state and then it is a mistake, or it does not alter the game state and then it is not inaccurate.
Dubious moves (!?) do not exist. Either a dubious move alters the game state and then it is a mistake, or it does not alter the game state and then it is not dubious.
You can only lose if you make a mistake. Any decisive game contains an odd number of mistakes, at least one.
Any move that converts a won position to another won position is a good move (!). Giving up material to simplify is often good.
After a mistake (?) a position can no longer be winning and after a blunder (??) the position is lost. wise advice of the most popular former funnily enough he got 5 likes and only one dislike

again you are wrong. Firstly, !? is called a interesting move which is an alternate and interesting move which could be considered.
Dubious move= inaccuracy (?!). The inaccuracy is a move which is not as bad as a mystake and does not result in a losing position for the player but there is stil a better move to be played. Also, the inaccuracy does alter the game stats. For example, I had multiples games where I did no mystakes and no blunders but still had something 4 or 5 inaccuracies. I did not play perfectly and my ACPL was somewhere around 50. Inaccuracies are mainly used for positional play and moves which slightly lowers the advantage of one side.

@gothica31 I firstly told the engine evaluates wrong in #11

@hydrophilic

in practical terms, at your and my level:
Avoid the blunders, learn from the mistakes (try to understand why they are mistakes), ignore the inaccuracies.