In the opening and middlegame, then yes, 1.00 should be a win with best play. Even smaller like 0.70 in a opening or middlegame is probably a win.
However the closer to the endgame you are, the more it depends on the specific position. Some endgames are a draw even when you're down material. Engines realize this somewhat, but other times they will go into a drawn (or lost) endgame without knowing it.
So for example in a concrete endgame like king and pawn or a knight endgame then a big plus should be winning. e.g. even 0.5 is probably a win with best play.
But if it shows 0.00 in a pawn endgame it may still be a win but because the computer can't calculate all the way to the end it doesn't know.
Something more positional like a rook endgame and you really can't trust your computer. Over 1.00 may still be a draw... or may be a win. If it's a win, the computer often plays bad moves and it turns into a draw and it doesn't realize until there's a draw by 50 move rule (the human realizes long before the computer).
an engine evaluation interpretation
I don't know if an engine considers the fact of sacrifice in order to mate. Sometimes a sacrifice is made to mate so although with +5.00, you might lose
I don't know if an engine considers the fact of sacrifice in order to mate. Sometimes a sacrifice is made to mate.
This is another good point. Positional ideas like sacrifice for attack (or pure positional sacrifices) are often overlooked by a computer. Sometimes it doesn't realize until many moves into the attack that it's good.
If it says 1.00 for example, then it's seen something good and it's probably winning. But if it thinks it's equal you can't be sure, it may be missing something.
You have to be very careful with this. What you get as a value of a position is the heuristical value of the position reached after the principal variation ( PV ) is played. This heuristics is a combination of many factors not just material. There is not a concrete centipawn advantage that can be viewed as a certain win. The evaluation of a position is only a compass for the engine to determine in which direction to go but you can not attribute to it some absolute meaning.
Dear Chess Players,
Suppose, an engine shows, say, a +1.00 pawn advantage for a player. Does it mean, in this case, that if the player contininue to play flawless he will necessary win? And +0.5 paws? +0.25? etc?