You must take your opponent into a deep dark forest where 2+2=5, and the path leading out is only wide enough for one.

What does mean 2+2=5???

What is all meaning??? anyone know???

 It's that strange feeling you get when you look down at your dog and say---"Toto, I dont believe we're in Kansas anymore."

no body knows except for the author'''''''

I believe he means that by complications he can challenge his opponents beliefs about a position, and if he's convinced it will work he can make his opponents doubt.

where 2+2=5

Maybe

where he can't calculate clearly

THe forest symbolizes a game of chess. 2+2=5 symbolizes an incredibly tactical position that defies normal logic or something or the sort. Such as the najdorf poisoned pawn. In some lines white is down heavy material, but still has the advantage.

MDAS 

+1

Gotta agree with Scott.  Tal was notorious, especially in his youth, of entering into the kind of complications that most people reserve for correspondence chess.  Many of his games had pieces hanging for 10 moves or more.  Another of my favorite Tal quotes is this one when he was asked how he could leave so many pieces hanging:

"He can only take them one at a time"

I think that there are two parts to the quote, one is he believes in complicating the position so as to remove positional elements and rely on raw calculating power.  The second is that by doing so, you often give the opponent the idea that the position has become win or lose and thus he might make more mistakes.

One cannot underestimate the psychological power he exercised over opponents w/these ultra-sharp positions. He often made sacs that were, upon later analysis, somewhat unsound, only knowing that "something" was there, but his oppos would figure he had it calculated (not unreasonable) and make poor moves based on both that assumption and that piercing stare of The Wizard.

“Tal was a fearless fighter. Nobody could successfully accomplish so many incorrect maneuvers! He simply smashed his opponents.”

To me it means ,you have to make them believe everything adds up to the sum that it should, but also for there to be one more thing for them to take into account than they shouldn't otherwise.

I guess if you can make someone believe they are defeated, then they are, even if they actually had the means to win the fight. Chances are many people once rattled by Tal, couldn't think straight enough for 2+2 to only equal 4, that had to be one more thing they missing, that he obviously, confidently sees.

I take him to mean he wants to bring his opponents to a place where what is considered basic truth for chess is no longer so, but the truth of the position is determined by the person who comes out of the game the winner.

http://blog.chess.com/Dozy/the-immovable-object
in this article I think it is explained.

Didn't O'Brian torture Winston to get him to confess 2+2=5, in the book 1984?

Here's a great quote from Tal that you don't see very often. Cross index under: French Defense exchange variation-- the shame! 

• Did you ever head for a draw from the very first move? TAL: In all my life, only once. In the 1955 USSR Team Championship Semi-final, playing White against Korchnoi, after the moves 1 e4 e6 2 d4 d5, I captured on d5. I was terribly ashamed (), and from that time I swore: to play for a draw, at any rate with White, is to some degree a crime against chess. 

I think Tal was saying of Fischer, with regard to Einstein's theory... you can't defy the dictation of space and time. Fischer drove himself crazy trying to figure out every nook and cranny of them both...Tal usually defeated his opponent, knowing he could never out play the dictation of chess theory, Fischer embodied chess theory with his every chess action.

My favorite Tal quote:

"To my misfortune, the idea of a fantastically beautiful win came into my head.  I played for it, the situation grew tense, both kings were threatened with mate, and suddenly I discovered that the whole point of my combination lay in the move Bf8-g5(!!!).  Since bishops don't move that way, I had to resign." -- The Life and Games of Mikhail Tal.  And this was one of the games in his match to earn the title of Soviet Master!